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1 decade oscillator
Метрология: декадный генератор -
2 decade oscillator
nELECTRON oscilador de décadas m -
3 decade
nAIR TRANSP, ELECTRON, NUCL década f -
4 decade LC oscillator
dekadowy oscylator LCEnglish-Polish dictionary of Electronics and Computer Science > decade LC oscillator
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5 tube
1) (электронная) лампа; (электронный) прибор2) трубка, труба || придавать трубчатую форму3) заключать в трубу или трубку•- tube of magnetic flux
- acorn tube
- acoustical tube
- air-cooled tube
- aligned-grid tube
- aluminized-screen picture tube
- amplifier tube
- anode-potential-stabilized camera tube
- anode-voltage-stabilized camera tube
- anti-TR tube
- anti-transmit-receive tube
- aperture-grill cathode ray tube
- aperture-grille cathode ray tube
- apple tube
- arc-discharge tube
- ATR tube
- attenuator tube
- backward-wave tube
- traveling-wave tube
- ballast tube
- banana tube
- banana-color tube
- band-ignitor tube
- bantam tube
- Barkhausen tube
- barrier-grid storage tube
- beam-deflection mixer tube
- beam-indexing tube
- beam-power tube
- beam-shaping cathode-ray tube
- beam-storage tube
- beam-switching tube
- bistable-phosphor storage tube
- bogey tube
- boob tube
- boron counter tube
- Braun tube
- Brewster angle tube
- camera tube
- camera storage tube
- cathode-potential-stabilized camera tube
- cathode-ray tube
- cathode-ray charge-storage tube
- cathode-ray storage tube
- cathode-voltage-stabilized camera tube
- cathodochromic dark-trace tube
- catkin tube
- cell-type tube
- character-generation cathode-ray tube
- character-indicator tube
- Charactron tube
- charge-storage tube
- chromatron tube
- coding tube
- coiltube
- cold-cathode tube
- cold-cathode counter tube
- cold-cathode glow-discharge tube
- cold-cathode stepping tube
- color cathode-ray tube
- color-picture tube
- control tube
- converter tube
- cooled-anode tube
- cooled-anode transmitting tube
- Coolidge tube
- corona tube
- counter tube
- coupled-cavity traveling-wave tube
- Crookes tube
- crossed-field tube
- cyclotron-wave tube
- damper tube
- dark-trace tube
- dc-powered tube
- decade counter tube
- deflection-type storage tube
- demountable tube
- density-modulated tube
- detector tube
- diffusion tube
- diffusion-furnace tube
- direct-display storage tube
- directly heated tube
- direct-viewing image tube
- direct-view storage tube
- discharge tube
- disk-seal tube
- display storage tube
- dissector tube
- doorknob tube
- dot matrix tube
- double-beam cathode-ray tube
- double-gun cathode-ray tube
- double-stream backward-wave tube
- draw tube
- drift tube
- driver tube
- dual-deflection tube
- duplex tube
- electrical-signal storage tube
- electric-flux tube
- electromagnetically deflected tube
- electromagnetically focused tube
- electromagnetically focused image tube
- electromagnetic cathode-ray tube
- electromagnetic-deflection cathode-ray tube
- electrometer tube
- electron tube
- electron-beam tube
- electron-beam switch tube with cross fields
- electron-beam switch tube with trochoid beam
- electron-dispersion tube
- electronic flash tube
- electron image tube
- electron-indicator tube
- electron-multiplier tube
- electron-ray tube
- electrostatically deflected tube
- electrostatically focused tube
- electrostatically focused traveling-wave tube
- electrostatic cathode-ray tube
- electrostatic memory tube
- electrostatic printing tube
- electrostatic storage tube
- end-window counter tube
- Eustachian tube
- extended-cutoff tube
- extended-interaction tube
- externally quenched counter tube
- Farnsworth image-dissector tube
- fast-wave tube
- fiber-optics image tube
- flash tube
- flat tube
- flux tube
- fuse tube
- gas tube
- gas-discharge tube
- gas-filled radiation-counter tube
- gas-flow counter tube
- gas rectifier tube
- gassy tube
- gated-beam tube
- Geiger counter tube
- Geiger-Mueller counter tube
- glass tube
- glow tube
- glow-discharge cold-cathode tube
- glow indicator tube
- grid-control tube
- gridded tube
- grid-glow tube
- grid-pool tube
- halogen-quenched counter tube
- hard tube
- heater-type tube
- heat-eye tube
- Heil tube
- helix traveling-wave tube
- high-electron-velocity camera tube
- high-mu tube
- high-power tube
- high-vacuum tube
- high-velocity camera tube
- Hittorf tube
- hodoscope tube
- hollow-cathode tube
- hot-cathode tube
- hot-cathode gas-filled tube
- image tube
- image camera tube
- image-converter tube
- image-dissector tube
- image-intensifier tube
- image orthicon tube
- image storage tube
- indicator tube
- indirectly heated tube
- inductance tube
- induction-output tube
- interference tube
- ionic-heated-cathode tube
- ionization-gage tube
- key tube
- klystron tube
- laser tube
- Lawrence tube
- lighthouse tube
- light-sensitive tube
- linear-beam tube
- line-focus tube
- liquid-flow counter tube
- local-oscillator tube
- low-electron-velocity camera tube
- luminescent-screen tube
- magnetic tube of force
- magnetically beamed tube
- master tube
- McNally tube
- mechanically controlled tube
- memory cathode-ray tube
- mercury tube
- mercury-arc tube
- mercury-pool tube
- mercury-vapor tube
- metal tube
- metal-ceramic disk tube
- microwave tube
- miniature tube
- mixer tube
- monochromatic cathode-ray tube
- monoscope cathode-ray tube
- M-type tube
- multianode tube
- multicolor cathode-ray tube
- multielectrode tube
- multigun tube
- multigun cathode-ray tube
- multiple-collector traveling-wave tube
- multiple-unit tube
- multiplier tube
- multistage tube
- multiunit tube
- negative tube
- Nixie tube
- noise tube
- noise-generator tube
- nonstorage camera tube
- numerical indicator tube
- numerical-readout tube
- optical-relay tube
- organic-quenched counter tube
- oscillating tube
- oscillograph tube
- oscilloscope tube
- O-type tube
- output tube
- overdriven tube
- PDA tube
- peanut tube
- pencil tube
- penetration-control color tube
- pentagrid tube
- phase-tuned tube
- photoconductive storage tube
- photoelectric tube
- photoelectric electron-multiplier tube
- photo erasable dark trace storage tube
- photo erasable dark trace cathode-ray storage tube
- photoflash tube
- photoglow tube
- photomixer image tube
- photomultiplier tube
- photosensitive tube
- pickup tube
- picture tube
- planar ceramic tube
- plasma-cathode traveling-wave tube
- plumbicon tube
- Pockels tube
- pool tube
- pool-cathode tube
- positive tube
- positive-grid oscillator tube
- postdeflection acceleration tube
- power tube
- power-amplifier tube
- pressure-equalizing tube
- pre-TR tube
- projected tube
- projection cathode-ray tube
- proportional counter tube
- protector tube
- pumped tube
- pyroelectric thermal image tube
- radar tube
- radial-beam tube
- radiation counter tube
- radiation-indexing color tube
- radio tube
- range-azimuth tube
- reactance tube
- reaction tube
- recording storage tube
- regulator tube
- remote-cutoff tube
- repeating flash tube
- ring-sealed tube
- rotation-anode tube
- rotation-anode X-ray tube
- scan-converter storage tube
- screen-grid tube
- sealed-off discharge tube
- SEC camera tube
- secondary-electron conduction camera tube
- secondary-emission tube
- self-focused picture tube
- self-pumping traveling-wave tube
- self-quenched counter tube
- self-rectifying X-ray tube
- shadow-mask cathode ray tube
- shadow-mask color-picture tube
- shaped-beam tube
- sharp-cutoff tube
- shielded tube
- shrinkable plastic tube
- signal-generating tube
- silicon camera tube
- silicon diode-array camera tube
- silicon-dioxide storage tube
- silicon intensifier target tube
- single-collector traveling-wave tube
- single-gun color-picture tube
- SIT tube
- situation-display tube
- slave tube
- slot-mask cathode ray tube
- slot-matrix tube
- soft tube
- space-charge tube
- space-charge-wave tube
- split-beam cathode-ray tube
- squelch tube
- stacked-ceramic tube
- storage tube
- storage cathode-ray tube
- storage-type camera tube
- stroboscopic tube
- subminiature tube
- switching tube
- Tamman tube
- television picture tube
- thermionic tube
- thin cathode-ray tube
- thin-wall counter tube
- three-dimensional cathode-ray tube
- three-gap TR tube
- three-gun color-picture tube
- three-neck picture tube
- TR tube
- transmit-receive tube
- transverse-beam traveling-wave tube
- transverse-field traveling-wave tube
- traveling-wave tube
- TR bandpass tube
- tricolor tube
- tricolor-picture tube
- trigger tube
- tungar tube
- vacuum tube
- vacuum fluorescent tube
- vacuum-gage tube
- valve tube
- variable-mu tube
- velocity-modulated tube
- video camera tube
- voltage-amplifier tube
- voltage-reference tube
- voltage-regulator tube
- voltage-stabilizing tube
- voltage-tunable tube
- wall tube
- water-cooled tube
- Williams tube
- window counter tube
- windowless photomultiplier tube
- xenon flash tube
- X-ray tube -
6 Appleton, Sir Edward Victor
[br]b. 6 September 1892 Bradford, Englandd. 21 April 1965 Edinburgh, Scotland[br]English physicist awarded the Nobel Prize for Physics for his discovery of the ionospheric layer, named after him, which is an efficient reflector of short radio waves, thereby making possible long-distance radio communication.[br]After early ambitions to become a professional cricketer, Appleton went to St John's College, Cambridge, where he studied under J.J.Thompson and Ernest Rutherford. His academic career interrupted by the First World War, he served as a captain in the Royal Engineers, carrying out investigations into the propagation and fading of radio signals. After the war he joined the Cavendish Laboratory, Cambridge, as a demonstrator in 1920, and in 1924 he moved to King's College, London, as Wheatstone Professor of Physics.In the following decade he contributed to developments in valve oscillators (in particular, the "squegging" oscillator, which formed the basis of the first hard-valve time-base) and gained international recognition for research into electromagnetic-wave propagation. His most important contribution was to confirm the existence of a conducting ionospheric layer in the upper atmosphere capable of reflecting radio waves, which had been predicted almost simultaneously by Heaviside and Kennelly in 1902. This he did by persuading the BBC in 1924 to vary the frequency of their Bournemouth transmitter, and he then measured the signal received at Cambridge. By comparing the direct and reflected rays and the daily variation he was able to deduce that the Kennelly- Heaviside (the so-called E-layer) was at a height of about 60 miles (97 km) above the earth and that there was a further layer (the Appleton or F-layer) at about 150 miles (240 km), the latter being an efficient reflector of the shorter radio waves that penetrated the lower layers. During the period 1927–32 and aided by Hartree, he established a magneto-ionic theory to explain the existence of the ionosphere. He was instrumental in obtaining agreement for international co-operation for ionospheric and other measurements in the form of the Second Polar Year (1932–3) and, much later, the International Geophysical Year (1957–8). For all this work, which made it possible to forecast the optimum frequencies for long-distance short-wave communication as a function of the location of transmitter and receiver and of the time of day and year, in 1947 he was awarded the Nobel Prize for Physics.He returned to Cambridge as Jacksonian Professor of Natural Philosophy in 1939, and with M.F. Barnett he investigated the possible use of radio waves for radio-location of aircraft. In 1939 he became Secretary of the Government Department of Scientific and Industrial Research, a post he held for ten years. During the Second World War he contributed to the development of both radar and the atomic bomb, and subsequently served on government committees concerned with the use of atomic energy (which led to the establishment of Harwell) and with scientific staff.[br]Principal Honours and DistinctionsKnighted (KCB 1941, GBE 1946). Nobel Prize for Physics 1947. FRS 1927. Vice- President, American Institute of Electrical Engineers 1932. Royal Society Hughes Medal 1933. Institute of Electrical Engineers Faraday Medal 1946. Vice-Chancellor, Edinburgh University 1947. Institution of Civil Engineers Ewing Medal 1949. Royal Medallist 1950. Institute of Electrical and Electronics Engineers Medal of Honour 1962. President, British Association 1953. President, Radio Industry Council 1955–7. Légion d'honneur. LLD University of St Andrews 1947.Bibliography1925, joint paper with Barnett, Nature 115:333 (reports Appleton's studies of the ionosphere).1928, "Some notes of wireless methods of investigating the electrical structure of the upper atmosphere", Proceedings of the Physical Society 41(Part III):43. 1932, Thermionic Vacuum Tubes and Their Applications (his work on valves).1947, "The investigation and forecasting of ionospheric conditions", Journal of theInstitution of Electrical Engineers 94, Part IIIA: 186 (a review of British work on the exploration of the ionosphere).with J.F.Herd \& R.A.Watson-Watt, British patent no. 235,254 (squegging oscillator).Further ReadingWho Was Who, 1961–70 1972, VI, London: A. \& C.Black (for fuller details of honours). R.Clark, 1971, Sir Edward Appleton, Pergamon (biography).J.Jewkes, D.Sawers \& R.Stillerman, 1958, The Sources of Invention.KFBiographical history of technology > Appleton, Sir Edward Victor
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7 tube
2) патрубок4) туннель5) англ. метро(политен)6) резин. камера ( шины или рукава)7) резин. шприцевать трубчатую заготовку9) футляр, гильза ( сухого элемента)10) эл. вентиль14) электронно-лучевой прибор, ЭЛП15) электронно-лучевая трубка, ЭЛТ17) лупа (напр. визирная)18) губа, тюбик•-
acorn tube
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afterglow tube
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air tube
-
airspeed tube
-
aligned-grid tube
-
all-metal tube
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all-rubber tube
-
amplification tube
-
annular tubes
-
attenuator tube
-
augmentor tube
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backward-wave tube
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ballast tube
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bantam tube
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Barkhausen-Kurz tube
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Barkhausen tube
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barometer tube
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bead tube
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beam tube
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beam-deflection selector tube
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beam-indexing tube
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beam-power tube
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beam-storage tube
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beam-switching tube
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bipotential cathode-ray tube
-
bipotential tube
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black-and-white picture tube
-
blast tube
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blind-end tube
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blocking tube
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boiling tube
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bottom-guide tube
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Bourdon tube
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branch tube
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Braun tube
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bridge wall tubes
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bubble tube
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butt-ended tube
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calandria tube
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calming tube
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camera tube
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casing tube
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casting tube
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cathode-ray memory tube
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cathode-ray tube
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cell-type tube
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center air tube
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charge-storage tube
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choke tube
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Christophorsen tube
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chromatron tube
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cigarette tube
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clad tube
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clean tube
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cloth-inserted tube
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coiled tubes
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cold-cathode tube
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collapsible tube
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color cathode-ray tube
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color picture tube
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concentric draft tube
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contactor tube
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contact tube
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continuous tube
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convergent short tube
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convergent tube
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converging tube
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convoluted tube
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corona-discharge tube
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corona tube
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counter tube
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cracking tube
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crossed-field tube
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crossover tube
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cutting oxygen tube
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damper tube
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dark-trace tube
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decade counter tube
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delta gun shadow mask tube
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density-modulated tube
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detonator tube
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dipper tube
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direct viewing tube
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direct view tube
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directional-beam X-ray tube
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direct-viewing storage tube
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direct-view storage tube
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discharge tube
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display storage tube
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display tube
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dissector tube
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distillation tube
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diverging tube
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double-gun cathode-ray tube
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double-walled tube
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draft tube
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drainage tube
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drain tube
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drawdown tube
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dredging tube
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drying tube
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elbow-type draft tube
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elbow draft tube
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electrical-signal storage tube
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electric-signal storage tube
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electrode cooling tube
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electrometer tube
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electron-beam tube
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electronic tube
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electron-multiplier tube
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electrostatic memory tube
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emulsion tube
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end-window counter tube
-
erect image focusing tube
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evaporating tube
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exhaust tube
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extension tube
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externally quenched counter tube
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fabric tube
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Faraday tube
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fast-screen cathode-rat tube
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feeder tube
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fence tube
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filler tube
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fire tube
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flame tube
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flange tube
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flared-type draft tube
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flash tube
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flat tube
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flat-ended tube
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flat-faced tube
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flat-screen tube
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flexible metal tube
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flow tube
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fluorescent tube
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fluted tube
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flux-feed tube
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flux tube
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flying spot scanning tube
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focusing tube
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fractional distillating tube
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fuel tube
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fuel-element charging tube
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fuel-element discharge tube
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fuel-element transfer tube
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fuel-port tube
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furnace tube
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fuse tube
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gas-discharge tube
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gas-filled counter tube
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gas-flow counter tube
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Geiger-Muller counter tube
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Geiger counter tube
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glow tube
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glow-discharge tube
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grid-glow tube
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grilled tube
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grout tube
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guide tube
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halogen tube
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heavy-end tube
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heavy-fin tube
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heavy-walled tube
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helical welded tube
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high-vacuum tube
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high-velocity camera tube
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hot-cathode tube
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image camera tube
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image pickup tube
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image tube
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image-converter tube
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image-dissector tube
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image-intensifier tube
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impact tube
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indicator tube
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inductance tube
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inflatable rubber tube
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injection tube
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inlet tube
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in-line gun color picture tube
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in-line color picture tube
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in-line picture tube
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inner tube
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insulating tube
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internally pressurized tube
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ionization-gage tube
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isosceles triangular tube
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lance tube
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Lawrence tube
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lens tube
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level tube
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lift tube
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line-focus tube
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local-oscillator tube
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longitudinal welded tube
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low-fin tube
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low-velocity camera tube
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L-shape tube
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luminescent tube
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luminescent-screen tube
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luminous discharge tube
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magnetic-focusing tube
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Maxwell tube
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mechanically controlled tube
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memory cathode-ray tube
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memory tube
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mercury pool tube
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mercury-arc tube
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miniature tube
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mixer tube
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mixing tube
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Mojonnier tube
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mold tube
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Moody spreading draft tube
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Moody draft tube
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M-type tube
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multielectrode tube
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multigun cathode-ray tube
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multigun tube
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multiple tube
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multiplier tube
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multistage X-ray tube
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neon tube
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night-sight tube
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nitrometer tube
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Nixie tube
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nonuniformly heated tube
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oscillating tube
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oscillograph tube
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O-type tube
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outlet tube
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panoramic X-ray tube
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parent tube
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pastes tube
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penetration tube
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phase-shifter tube
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photoelectric tube
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photoflash tube
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photomultiplier tube
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photosensitive tube
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pickup tube
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picture tube
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PIL type tube
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PIL tube
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Pitot tube
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plumbicon tube
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poison tube
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polyallomer tube
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polycarbonate tube
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pool-cathode tube
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pool tube
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power tube
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precision in-line tube
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preheating oxygen tube
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pressure tube
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process tube
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projection tube
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proportional counter tube
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protector tube
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proximity-focused image tube
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puncture-sealing tube
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pyrometer tube
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radiant section tubes
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radiant tubes
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radiation counter tube
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radio tube
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reactance tube
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recording cathode-ray tube
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recording tube
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regulating tube
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reserve tube
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return tube
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revolving tube
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riffled tube
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rigid tube
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road-draft tube
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roof radiant tubes
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rotating-anode X-ray tube
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rough tube
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rubber tube
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rudder tube
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run resist tube
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safety inner tube
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sampling tube
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scaffold tube
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screen tubes
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scupper tube
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seamless drawn tube
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seamless tube
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SEC tube
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sectional X-ray tube
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self-quenched counter tube
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shaft tube
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shielded tube
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shock tube
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silicon diode-array camera tube
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silicon camera tube
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silicon-intensifier target tube
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siphon draft tube
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sleeve tube
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slot-mask tube
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smooth-wall tube
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snorkel tube
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snow sampling tube
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snow tube
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softening point tubes
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solid tube
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space-charge-wave tube
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stabilitron tube
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stationary-anode X-ray tube
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steam tube
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steam-generating tube
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steering tube
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stern tube
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stopper tube
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storage cathode-ray tube
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storage tube
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straight draft tube
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stream tube
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strip-phosphor tube
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suction tube
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switching tube
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tank breather tubes
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television picture tube
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television tube
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tension tube
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test tube
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thermometer tube
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thief tube
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thin-walled tube
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three-gun color picture tube
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thruster tube
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tire inner tube
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torch tube
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transition tube
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transverse-field traveling-wave tube
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traveling-wave tube
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trigger tube
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tripotential cathode-ray tube
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tripotential tube
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tube of current
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tube of electric force
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tube of flow
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tube of magnetic flux
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tube of magnetic force
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twisting tube
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twist tube
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uniformly heated tube
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U-V fluorescent tube
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vacuum tube
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vacuum-gage tube
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valve tube
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vapor delivery tube
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vapor tube
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Venturi tube
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vidicon camera tube
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vidicon tube
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voltage-reference tube
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voltage-regulating tube
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wall radiant tubes
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wall tube
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waterwall tube
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Williams tube
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wire-reinforced plastic tube
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wiring tube
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X-ray tube
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x-y shutter tube -
8 tube
1) труба
2) трубка
3) трубопрочистный
4) тюбик
5) фейфка
6) <engin.> лампа
7) трубчатый
8) цилиндрический
9) трубный
10) межтрубный
11) междутрубный
– amplifying tube
– antitransmit-receive tube
– atr tube
– babitron tube
– barrier-grid tube
– beam-deflection tube
– beam-switching tube
– bias tube
– Bourdon tube
– camera tube
– capillary tube
– cathode-heater tube
– cathoderay tube
– cold-cathode tube
– combustion tube
– condenser tube
– connecting tube
– coring tube
– counter tube
– counting tube
– coupling tube
– damper tube
– demountable tube
– detector tube
– developmental tube
– diode tube
– discharge tube
– disk-seal tube
– display tube
– double-anode tube
– double-base tube
– double-beam tube
– draft tube
– drift tube
– drilling-mud tube
– driver tube
– dual tube
– dull-emitter tube
– electron tube
– electron-beam tube
– electron-ray tube
– electronic tube
– exhaust tube
– extension tube
– eyepiece tube
– fading tube
– field tube
– finned tube
– fire tube
– flame tube
– flexure of tube
– flow tube
– flue tube
– fluid tube
– flux tube
– flying-spot tube
– four-electrode tube
– gas tube
– gas-filled tube
– gate tube
– Geissler tube
– glow VR tube
– glow-discharge tube
– grid-control tube
– grid-pool tube
– hibride tube
– high-frequency tube
– high-vacuum tube
– hot-cathode tube
– ignition tube
– indirectly-heated tube
– inner tube
– keying tube
– leg of a manometer tube
– lighthouse tube
– limiter tube
– low-noise tube
– low-power tube
– M-type tube
– microwave tube
– midget tube
– mixer tube
– modulator tube
– movable-plate tube
– multi-beam tube
– multi-electron-beam tube
– multi-unit tube
– multielectrode tube
– multigrid tube
– multiple tube
– neon tube
– noisy tube
– O-type tube
– oscillating tube
– oscillator tube
– packaged tube
– photomultiplier tube
– picture tube
– pilot-static tube
– pinch tube
– Pitot tube
– planar-electrode tube
– plate-cap tube
– plug-in TR tube
– pool tube
– pressure tube
– protector tube
– pulse tube
– pump tube
– radial-beam tube
– reactance tube
– recte tube
– relay tube
– resonance tube
– scaling tube
– scan-conversion tube
– secondary-emission tube
– shock tube
– spacing tube
– spark-gap ATR tube
– spark-gap TR tube
– speaking tube
– squelch tube
– steam-generating tube
– stern tube
– storage tube
– subminiature tube
– swiveling tube
– television tube
– thermionic tube
– thick-walled tube
– thin-walled tube
– TR tube
– transmitting tube
– travelling-wave tube
– tube adapter
– tube bank
– tube bundle
– tube complement
– tube count
– tube cutter
– tube domain
– tube expander
– tube micrometer
– tube mill
– tube mixer
– tube noise
– tube of force
– tube paint
– tube plate
– tube puller
– tube radio
– tube receiver
– tube socket
– tube tester
– tube transmitter
– TV picture tube
– vacuum tube
– valve tube
– variable-capacitance tube
– variable-mu tube
– vent tube
– vortex tube
– VR tube
– water-cooled tube
– water-wall tube
– Williams tube
– X-ray tube
backward-wave traveling-wave tube — < radio> лампа обратной волны
black-and-white picture tube — черно-белый кинескоп, кинескоп черно-белого изображения
character display tube — знакопечатающая электронно-лучевая трубка
cold-cathode glow-discharge tube — <tech.> лампа тлеющая автоэлектронная
combined focusing tube — прибор СВЧ с комбинированной фокусирующей системой
current regulator tube — <tech.> барретер, барретор, барреттер, токостабилизатор
delivery tube of an injector — нагнетательный конус инжектор
dip stick insert tube — <comput.> отверстие для масломерной линейки
grid pool tube — <tech.> выпрямитель газоразрядный с сеткой
image camera tube — передающая телевизионная ЭЛТ с переносом изображения
image pick-up tube — передающая телевизионная электронно-лучевая трубка
implosion-resistant cathode-ray tube — взрывобезопасная электронно-лучевая трубка
inclined tube micromanometer — микроманометр с наклонной трубкой
nonstorage camera tube — <phot.> кинескоп безынерционный
photo-conductive camera tube — передающая трубка с фотопроводимостью
pressure tube reactor — <engin.> реактор канальный
projection cathode-ray tube — проекционная электронно-лучевая трубка
shadow-mask color tube — <phot.> кинескоп масочный
single-anode rectifier tube — одноанодная выпрямительная лампа
storage camera tube — передающая трубка с накоплением заряда
three-gun picture tube — трехлучевая передающая приемная трубка
triple-control-grid gate tube — лампа-вентиль с тремя управляющими сетками
Vieille shock tube — <phys.> труба диафрагменная, трубка ударная Вьеля
voltage regulator tube — < radio> лампа стабилизатора
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9 De Forest, Lee
SUBJECT AREA: Broadcasting, Electronics and information technology, Photography, film and optics, Recording, Telecommunications[br]b. 26 August 1873 Council Bluffs, Iowa, USAd. 30 June 1961 Hollywood, California, USA[br]American electrical engineer and inventor principally known for his invention of the Audion, or triode, vacuum tube; also a pioneer of sound in the cinema.[br]De Forest was born into the family of a Congregational minister that moved to Alabama in 1879 when the father became President of a college for African-Americans; this was a position that led to the family's social ostracism by the white community. By the time he was 13 years old, De Forest was already a keen mechanical inventor, and in 1893, rejecting his father's plan for him to become a clergyman, he entered the Sheffield Scientific School of Yale University. Following his first degree, he went on to study the propagation of electromagnetic waves, gaining a PhD in physics in 1899 for his thesis on the "Reflection of Hertzian Waves from the Ends of Parallel Wires", probably the first US thesis in the field of radio.He then joined the Western Electric Company in Chicago where he helped develop the infant technology of wireless, working his way up from a modest post in the production area to a position in the experimental laboratory. There, working alone after normal working hours, he developed a detector of electromagnetic waves based on an electrolytic device similar to that already invented by Fleming in England. Recognizing his talents, a number of financial backers enabled him to set up his own business in 1902 under the name of De Forest Wireless Telegraphy Company; he was soon demonstrating wireless telegraphy to interested parties and entering into competition with the American Marconi Company.Despite the failure of this company because of fraud by his partners, he continued his experiments; in 1907, by adding a third electrode, a wire mesh, between the anode and cathode of the thermionic diode invented by Fleming in 1904, he was able to produce the amplifying device now known as the triode valve and achieve a sensitivity of radio-signal reception much greater than possible with the passive carborundum and electrolytic detectors hitherto available. Patented under the name Audion, this new vacuum device was soon successfully used for experimental broadcasts of music and speech in New York and Paris. The invention of the Audion has been described as the beginning of the electronic era. Although much development work was required before its full potential was realized, the Audion opened the way to progress in all areas of sound transmission, recording and reproduction. The patent was challenged by Fleming and it was not until 1943 that De Forest's claim was finally recognized.Overcoming the near failure of his new company, the De Forest Radio Telephone Company, as well as unsuccessful charges of fraudulent promotion of the Audion, he continued to exploit the potential of his invention. By 1912 he had used transformer-coupling of several Audion stages to achieve high gain at radio frequencies, making long-distance communication a practical proposition, and had applied positive feedback from the Audion output anode to its input grid to realize a stable transmitter oscillator and modulator. These successes led to prolonged patent litigation with Edwin Armstrong and others, and he eventually sold the manufacturing rights, in retrospect often for a pittance.During the early 1920s De Forest began a fruitful association with T.W.Case, who for around ten years had been working to perfect a moving-picture sound system. De Forest claimed to have had an interest in sound films as early as 1900, and Case now began to supply him with photoelectric cells and primitive sound cameras. He eventually devised a variable-density sound-on-film system utilizing a glow-discharge modulator, the Photion. By 1926 De Forest's Phonofilm had been successfully demonstrated in over fifty theatres and this system became the basis of Movietone. Though his ideas were on the right lines, the technology was insufficiently developed and it was left to others to produce a system acceptable to the film industry. However, De Forest had played a key role in transforming the nature of the film industry; within a space of five years the production of silent films had all but ceased.In the following decade De Forest applied the Audion to the development of medical diathermy. Finally, after spending most of his working life as an independent inventor and entrepreneur, he worked for a time during the Second World War at the Bell Telephone Laboratories on military applications of electronics.[br]Principal Honours and DistinctionsInstitute of Electronic and Radio Engineers Medal of Honour 1922. President, Institute of Electronic and Radio Engineers 1930. Institute of Electrical and Electronics Engineers Edison Medal 1946.Bibliography1904, "Electrolytic detectors", Electrician 54:94 (describes the electrolytic detector). 1907, US patent no. 841,387 (the Audion).1950, Father of Radio, Chicago: WIlcox \& Follett (autobiography).De Forest gave his own account of the development of his sound-on-film system in a series of articles: 1923. "The Phonofilm", Transactions of the Society of Motion Picture Engineers 16 (May): 61–75; 1924. "Phonofilm progress", Transactions of the Society of Motion Picture Engineers 20:17–19; 1927, "Recent developments in the Phonofilm", Transactions of the Society of Motion Picture Engineers 27:64–76; 1941, "Pioneering in talking pictures", Journal of the Society of Motion Picture Engineers 36 (January): 41–9.Further ReadingG.Carneal, 1930, A Conqueror of Space (biography).I.Levine, 1964, Electronics Pioneer, Lee De Forest (biography).E.I.Sponable, 1947, "Historical development of sound films", Journal of the Society of Motion Picture Engineers 48 (April): 275–303 (an authoritative account of De Forest's sound-film work, by Case's assistant).W.R.McLaurin, 1949, Invention and Innovation in the Radio Industry.C.F.Booth, 1955, "Fleming and De Forest. An appreciation", in Thermionic Valves 1904– 1954, IEE.V.J.Phillips, 1980, Early Radio Detectors, London: Peter Peregrinus.KF / JW -
10 Hetzel, Max
[br]b. 5 March 1921 Basle, Switzerland[br]Swiss electrical engineer who invented the tuning-fork watch.[br]Hetzel trained as an electrical engineer at the Federal Polytechnic in Zurich and worked for several years in the field of telecommunications before joining the Bulova Watch Company in 1950. At that time several companies were developing watches with electromagnetically maintained balances, but they represented very little advance on the mechanical watch and the mechanical switching mechanism was unreliable. In 1952 Hetzel started work on a much more radical design which was influenced by a transistorized tuning-fork oscillator that he had developed when he was working on telecommunications. Tuning forks, whose vibrations were maintained electromagnetically, had been used by scientists during the nineteenth century to measure small intervals of time, but Niaudet- Breguet appears to have been the first to use a tuning fork to control a clock. In 1866 he described a mechanically operated tuning-fork clock manufactured by the firm of Breguet, but it was not successful, possibly because the fork did not compensate for changes in temperature. The tuning fork only became a precision instrument during the 1920s, when elinvar forks were maintained in vibration by thermionic valve circuits. Their primary purpose was to act as frequency standards, but they might have been developed into precision clocks had not the quartz clock made its appearance very shortly afterwards. Hetzel's design was effectively a miniaturized version of these precision devices, with a transistor replacing the thermionic valve. The fork vibrated at a frequency of 360 cycles per second, and the hands were driven mechanically from the end of one of the tines. A prototype was working by 1954, and the watch went into production in 1960. It was sold under the tradename Accutron, with a guaranteed accuracy of one minute per month: this was a considerable improvement on the performance of the mechanical watch. However, the events of the 1920s were to repeat themselves, and by the end of the decade the Accutron was eclipsed by the introduction of quartz-crystal watches.[br]Principal Honours and DistinctionsNeuchâtel Observatory Centenary Prize 1958. Swiss Society for Chronometry Gold Medal 1988.Bibliography"The history of the “Accutron” tuning fork watch", 1969, Swiss Watch \& Jewellery Journal 94:413–5.Further ReadingR.Good, 1960, "The Accutron", Horological Journal 103:346–53 (for a detailed technical description).J.D.Weaver, 1982, Electrical \& Electronic Clocks \& Watches, London (provides a technical description of the tuning-fork watch in its historical context).DV
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