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81 water-discharge tube
gas tube — газовая труба; газотрон
English-Russian dictionary on nuclear energy > water-discharge tube
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82 переговорная труба
Большой англо-русский и русско-английский словарь > переговорная труба
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83 rumble
ˈrʌmbl
1. сущ.
1) громыхание( группы упавших твердых предметов) ;
грохот, грохотанье( орудий и т. д.) Syn: crash, rumbling
2) а) гул, шум недовольства;
ропот( толпы) Syn: murmur, discontent б) дурная молва, недобрый слух Syn: rumour
1.
3) амер.;
сл. ссора, скандал;
драка;
разборка (между бандами и т. п.)
4) а) ист. сиденье для слуги или место для багажа позади экипажа б) амер.;
авт. откидное сиденье (тж. rumble seat)
5) сл. обыск, шмон (на предмет наркотиков)
2. гл.
1) громыхать, грохотать, греметь We can hear thunder rumbling in the distance. ≈ Мы слышим, как вдали грохочет гром. The lorry rumbled along the road. ≈ По дороге с грохотом проехал грузовик. Syn: rattle, lumber
2) громко говорить, произносить( что-л.) ;
(тж. rumble out, rumble forth, rumble down) The Officer rumbled requests down the speaking-tube. ≈ Офицер громко выкрикивал свои требования в переговорную трубу.
3) урчать Her stomach rumbled. She hadn't eaten any breakfast. ≈ В животе у нее урчало. Еще бы - ведь она даже не завтракала. Syn: murmur
2. громыхание, грохот, грохотанье;
гул - the * of thunder раскаты грома - the * of an earthquake гул землетрясения ропот, жалобы;
недовольство - *s of opposition выражения протеста недобрый слух - to pass a * распространять злостные слухи (историческое) сиденье или место для багажа или слуги сзади экипажа заднее откидное сиденье (в кузове автомобиля спортивного типа) (американизм) (сленг) ссора, скандал;
драка между бандами подростков (сленг) поимка на месте преступления( сленг) обыск (особ. в поисках наркотиков) громыхать, греметь, грохотать - a cart *d along the street по улице с грохотом проехала телега ехать в громыхающем экипаже урчать говорить громко (тж. * out, * forth) - to * out /forth/ a remark громко сделать замечание( техническое) очищать в галтовочном барабане (разговорное) видеть насквозь, понимать rumble громыхание, грохотанье, грохот ~ громыхать, грохотать ~ амер. sl. драка между бандами ~ амер. авто откидное сиденье (тж. rumble seat) ~ ропот, недовольство ~ сиденье, место для багажа или слуги позади экипажа ~ сказать громко (тж. rumble out, rumble forth) ~ урчать -
84 rumble
['rʌmbl] 1. гл.1)а) громыхать, грохотать, греметьWe can hear thunder rumbling in the distance. — Мы слышим, как вдали грохочет гром.
The lorry rumbled along the road. — По дороге с грохотом проехал грузовик.
Syn:б) урчатьHer stomach rumbled. She hadn't eaten any breakfast. — В животе у неё урчало. Она не завтракала.
Syn:murmur 2.2) = rumble out, = rumble forth, = rumble down громко говорить, произноситьThe Officer rumbled requests down the speaking-tube. — Офицер громко выкрикивал свои требования в переговорную трубу.
3) брит.; разг. расколоть (кого-л.), обнаружить правду (о ком-л. / чём-л.)4) амер.; разг. ввязываться в драку, разборку (между бандами и т. п.)2. сущ.1) громыхание; грохот, грохотанье (орудий и т. п.); рокотSyn:2)а) гул, шум недовольства; ропот ( толпы)Syn:б) дурная молва, недобрый слухSyn:rumour 1.3) амер.; разг.а) ссора, скандалб) драка; разборка (между бандами и т. п.)4)а) ист. сиденье для слуги или место для багажа позади экипажаб) амер.; авто; = rumble seat откидное сиденье5) разг. обыск, шмон ( на предмет наркотиков) -
85 amplifier
1) усилитель2) приемник ( прямого усиления)•- acoustic amplifier
- adder amplifier
- all-pass amplifier
- all-purpose amplifier
- all-radial amplifier
- antenna amplifier
- aperiodic amplifier
- audio-distribution amplifier
- audio-frequency amplifier
- audio-video amplifier
- automatic stereophonic recording amplifier
- auxiliary amplifier
- AV-amplifier
- average power amplifier
- backward-wave amplifier
- B-amplifier
- bandpass amplifier
- base amplifier
- beam-parametric amplifier
- binaural-power amplifier
- bioelectric-potential amplifier
- bistable amplifier
- bootstrap amplifier
- branching amplifier
- bridge magnetic amplifier
- bridging amplifier
- broadband amplifier
- broadcasting amplifier
- buck-boost amplifier
- buffer amplifier
- bullet amplifier
- burst amplifier
- calibrated amplifier
- camera amplifier
- capacitor-coupled amplifier
- carrier amplifier
- cascade-coupled amplifier
- cascaded amplifier
- cathode-coupled amplifier
- cavity-type diode amplifier
- ceramic amplifier
- channel amplifier
- choke amplifier
- chopper-stabilized amplifier
- chroma-bandpass amplifier
- chrominance amplifier
- clamped amplifier
- class-A amplifier
- class-AB amplifier
- class-B amplifier
- class-C amplifier
- class-D amplifier
- class-E amplifier
- class-F amplifier
- clipper amplifier
- coaxial amplifier
- coherent-light amplifier
- coincidence amplifier
- cold-cathode amplifier
- color-burst amplifier
- common-collector amplifier
- common-drain amplifier
- common-emitter amplifier
- common-gate amplifier
- common-source amplifier
- compensated amplifier
- compressor amplifier
- conference amplifier
- continuous-signal amplifier
- controlled amplifier
- controlling amplifier
- convertor amplifier
- correcting-antenna amplifier
- coupling amplifier
- cross-field amplifier
- current amplifier
- dc amplifier
- dc power amplifier
- dc restoration amplifier
- deflection amplifier
- degenerate amplifier
- degenerative amplifier
- delay amplifier
- dielectric amplifier
- differential amplifier
- differentiating amplifier
- differentiation amplifier
- digital sound processor amplifier
- digital sound-field processor amplifier
- digitally-controlled amplifier
- diode amplifier
- direct resistance-coupled amplifier
- direct-communication amplifier
- distribution amplifier
- DMB-amplifier
- Doherty amplifier
- double-circuit amplifier
- double-stream amplifier
- double-tuned amplifier
- drift-compensated amplifier
- drift-corrected amplifier
- drift-free amplifier
- driver amplifier
- dual-operational amplifier
- dual-trace amplifier
- duct amplifier
- duplex amplifier
- earlike-response amplifier
- electric-organ amplifier
- electrometric amplifier
- electron-beam amplifier
- electronically-tunable amplifier
- electron-tube amplifier
- elementary amplifier
- end amplifier
- error amplifier
- error-signal amplifier
- extender amplifier
- fader amplifier
- fast-operating amplifier
- feedback amplifier
- feedforward amplifier
- ferrite amplifier
- ferromagnetic amplifier
- fiber-optic system amplifier
- field amplifier
- field-input amplifier
- filter amplifier
- final amplifier
- fixed-gain amplifier
- flat amplifier
- flat-staggered amplifier
- flip-flop amplifier
- follow-up amplifier
- forming amplifier
- forward-wave amplifier
- four-channel power amplifier
- four-stage amplifier
- frame amplifier
- frequency-selective amplifier
- functional amplifier
- gain-matched amplifier
- gain-stabilized amplifier
- galvanic amplifier
- G-amplifier
- gated amplifier
- generator amplifier
- grounded-anode amplifier
- grounded-base amplifier
- grounded-cathode amplifier
- grounded-collector amplifier
- grounded-drain amplifier
- grounded-emitter amplifier
- grounded-gate amplifier
- grounded-grid amplifier
- grounded-plate amplifier
- group amplifier
- group reception amplifier
- group transmission amplifier
- guitar amplifier
- Gunn amplifier
- half-wave amplifier
- head amplifier
- heterodyne amplifier
- Hi-Fi amplifier
- high-current power amplifier
- high-frequency amplifier
- home theater amplifier
- horizontal amplifier
- IF amplifier
- image amplifier
- image-rejecting intermediate amplifier
- IMPATT amplifier
- inductance amplifier
- input amplifier
- instrumentation amplifier
- integrated amplifier
- integrating amplifier
- intensity amplifier
- intermediate-frequency amplifier
- intermediate-power amplifier
- interphone amplifier
- inverting amplifier
- isolating amplifier
- klystron amplifier
- laser amplifier
- launch amplifier
- light amplifier
- limiter amplifier
- limiting amplifier
- line amplifier
- line frequency amplifier
- line power amplifier
- line voltage amplifier
- linear amplifier
- lin-log amplifier
- listening amplifier
- lock-in amplifier
- locomotive receiver amplifier
- logarithmic amplifier
- loud-speaking announcement amplifier
- low-frequency amplifier
- low-noise amplifier
- low-power amplifier
- luminance amplifier
- magnetic amplifier
- magnetron amplifier
- main amplifier
- maser amplifier
- master oscillator amplifier
- matched amplifier
- matrix amplifier
- measuring amplifier
- microphone amplifier
- microstrip amplifier
- microwave amplifier
- mixing amplifier
- modulated amplifier
- monaural power amplifier
- monitoring amplifier
- monolithic amplifier
- multichannel amplifier
- multistage amplifier
- narrow-band amplifier
- narrow-gate amplifier
- n-channel amplifier
- negative resistance amplifier
- negatron amplifier
- noiseless amplifier
- noise-suppressing amplifier
- noncooled amplifier
- nondegenerate amplifier
- noninverting amplifier
- nonlinear amplifier
- note amplifier
- n-stage amplifier
- operating amplifier
- operation amplifier
- optical amplifier
- optoelectronic amplifier
- output amplifier
- overdriven amplifier
- packaged amplifier
- paging amplifier
- parallel amplifier
- paramagnetic amplifier
- parametric amplifier
- paraphase amplifier
- peaked amplifier
- personal tone amplifier
- phase sensor amplifier
- photocurrent amplifier
- pip amplifier
- plasma amplifier
- playback amplifier
- plug-in amplifier
- power amplifier
- precision amplifier
- printed-circuit amplifier
- processing amplifier
- program amplifier
- pulse-distribution amplifier
- push-pull electret amplifier
- push-pull magnetic amplifier
- quadrature amplifier
- quantum amplifier
- radio-frequency amplifier
- Raman amplifier
- R-amplifier
- RC-coupled amplifier
- reactance amplifier
- read amplifier
- reception amplifier
- reciprocal amplifier
- recording amplifier
- recuperative amplifier
- reflecting amplifier
- regenerative amplifier
- remote-tuned amplifier
- repeating amplifier
- reproducing amplifier
- resistance-capacitance amplifier
- resonance amplifier
- resonant amplifier
- reversed-feedback amplifier
- RF-amplifier
- rotary amplifier
- rotating amplifier
- running wave lamp amplifier
- saturated amplifier
- selective amplifier
- self-feedback amplifier
- sense amplifier
- separate amplifier
- series amplifier
- sharpener amplifier
- SHF-amplifier
- signal-shaping amplifier
- simplest amplifier
- simplex amplifier
- single-ended amplifier
- single-frequency amplifier
- single-section amplifier
- single-sideband amplifier
- single-sided amplifier
- single-stage amplifier
- single-step amplifier
- single-tuned amplifier
- slicer amplifier
- solid-state amplifier
- sound frequency amplifier
- source-follower amplifier
- speech amplifier
- square-low amplifier
- square-wave amplifier
- stabilized amplifier
- stable amplifier
- stagger-tuned amplifier
- stereo/mono power amplifier
- straight amplifier
- strip-line amplifier
- studio amplifier
- subscriber amplifier
- Suhl amplifier
- summing amplifier
- super-recuperative amplifier
- supersonic amplifier
- surface-acoustic-wave amplifier
- sweep amplifier
- tandem amplifier
- tapered amplifier
- telephone-repeater amplifier
- terminal amplifier
- TFT-amplifier
- threshold amplifier
- time-shared amplifier
- track-and-hold amplifier
- transceiving amplifier
- transferred-electron amplifier
- transformer amplifier
- transformer-coupled amplifier
- transimpedance amplifier
- transistor amplifier
- transmission-type amplifier
- transmitter amplifier
- traveling wave amplifier
- tuned amplifier
- tunnel diode amplifier
- TV-antenna amplifier
- two-channel playback amplifier
- two-step amplifier
- two-way amplifier
- ultralinear amplifier
- unloading amplifier
- untapered amplifier
- utility video amplifier
- vacuum-tube amplifier
- valve amplifier
- variable transmitter amplifier
- video amplifier
- video-frequency amplifier
- voltage amplifier
- voltage-controlled amplifier
- volume-limiting amplifier
- vortex amplifier
- wide-band amplifier
- writing amplifier
- X-amplifier
- X-axis amplifier
- Y-amplifier
- Y-axis amplifier
- zero-phase drift amplifierEnglish-Russian dictionary of telecommunications and their abbreviations > amplifier
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86 current
1) поток
2) водоток
3) текущий
4) токовой
5) токовый
6) значение тока
7) имеющийся
8) <electr.> сила тока
9) сложившийся
10) течение
11) общеупотребительный
– absorption current
– alternating current
– antenna current
– ascending current
– avalanche current
– back current
– beam current
– bias current
– biasing current
– black current
– bunched current
– capacitive current
– Caribbean Current
– carry current
– carrying current
– charging current
– conduction current
– constant current
– consumption current
– control current
– convection current
– current algebra
– current amplification
– current balance
– current build-up
– current check
– current circuit
– current collector
– current consumption
– current crowding
– current density
– current distribution
– current divider
– current divides
– current drain
– current efficiency
– current events
– current feedback
– current gain
– current inrush
– current installing
– current instruction
– current intensity
– current limiter
– current limiting
– current margin
– current meter
– current noise
– current overload
– current path
– current production
– current protection
– current receiver
– current regulation
– current relay
– current rise
– current saturation
– current sensitivity
– current sheet
– current stabilization
– current stabilizer
– current standards
– current supply
– current task
– current transformer
– current triangle
– current vector
– current velocity
– current wave
– dark current
– decaying current
– descending current
– direct current
– discharge current
– displacement current
– double current
– drift current
– drop-out current
– dynode current
– eddy current
– emission current
– erasing current
– exchange current
– exciting current
– external current
– extraneous current
– fault current
– fault-to-earth current
– feed current
– feedback current
– field current
– filament current
– forward current
– full-select current
– fusing current
– gas current
– grid current
– half-select current
– holding current
– hole current
– in-phase current
– in-rush current
– induce current
– inhibit current
– input current
– instantaneous current
– ion current
– Kuroshio current
– large-scale air current
– large-scale current
– latching current
– leakage current
– let-go current
– line current
– load current
– loop current
– loss current
– magnetizing current
– marking current
– no-load current
– noise current
– non-sinusoidal current
– operate current
– operating current
– oscillating current
– Oudin current
– output current
– overload current
– partial-select current
– peak current
– penetration of current
– photocathode current
– plasma current
– plate current
– polarization current
– polyphase current
– preionization current
– primary current
– pulsating current
– pyroelectric current
– quiescent current
– r f current
– random current
– rated current
– read current
– recombination current
– rectified current
– rectify current
– residual current
– ringing current
– roaming current
– root-mean-square current
– saturation current
– saw-tooth current
– sea current
– sea current meter
– secondary current
– selection current
– self-inductance current
– set of current
– short-circuit current
– space-charge current
– speaking current
– spurious current
– standing current
– starting current
– stray current
– stream current
– strong current
– sweep current
– synchronizing current
– telluric current
– test current
– thermionic current
– three-phase current
– to be current
– transient current
– tunnel current
– wandering current
– welding current
– white current
– word current
– write current
alternating current motor — электродвигатель переменнего тока
amplitude of tidal current — <geogr.> амплитуда приливного течения
current regulator tube — <tech.> барретер, барретор, барреттер, токостабилизатор
equation for alternating current — уравнение переменного тока
short circuit current — <electr.> ток короткого замыкания
South Equatorial Current — <geogr.> течение Южное Пассатное
space-charge limited current — <electr.> ток ограниченный пространственным зарядом
variable current transformer — трансформатор переменного тока
zero signal current — <electr.> ток покоя
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87 microphone
= Mic- alloy microphone
- alloy-granule microphone
- ammonium-dihydrogen-phosphate microphone
- antinoise microphone
- astatic microphone
- band microphone
- barium-titanate microphone
- bidirectional microphone
- breast microphone
- breast-plate microphone
- built-in microphone
- button microphone
- capacitance microphone
- capacitor microphone
- carbon microphone
- carbon-capsule microphone
- carbon-granule microphone
- cardioid microphone
- ceramic microphone
- clip-on microphone
- close-speaking microphone
- close-talking microphone
- combination microphone
- condenser microphone
- contact microphone
- crossed coincident microphones
- crystal microphone
- diaphragmless microphone
- differential microphone
- directional microphone
- distributed microphones
- double-button microphone
- double-element microphone
- dynamic microphone
- ear microphone
- electret microphone
- electronic microphone
- electrostatic microphone
- figure-of-eight microphone
- first-order gradient microphone
- flame microphone
- flat microphone
- flat-pressure-response microphone
- four-capsule microphone
- glow-discharge microphone
- gradient microphone
- granule microphone
- granule-type microphone
- gun microphone
- hand microphone
- hand-held microphone
- hot-wire microphone
- hypercardioid microphone
- inductive microphone
- inductor microphone
- integral microphone
- interference tube microphone
- ionic microphone
- laboratory standard microphone
- lanyard microphone
- lapel microphone
- lavalier microphone
- lens microphone
- line microphone
- lip microphone
- low-impedance microphone
- machine-gun microphone
- magnetic microphone
- magnetic-armature microphone
- magnetostriction microphone
- mask microphone
- measuring microphone
- metal-insulator-piezoelectric semiconductor transducer microphone
- midget microphone
- moving-coil microphone
- moving-conductor microphone
- moving-iron microphone
- multiple microphone
- music-pickup microphone
- narrow-angle microphone
- noise-canceling microphone
- nondirectional microphone
- n-th order gradient microphone
- omnidirectional microphone
- parabolic-reflector microphone
- phase-shift microphone
- piezoelectric microphone
- pistol grip microphone
- polydirectional microphone
- pre-emphasized microphone
- pressure microphone
- pressure-actuated ribbon microphone
- pressure-gradient microphone
- probe microphone
- push-pull microphone
- reflector microphone
- RF capacitor microphone
- ribbon microphone
- rifle microphone
- robust microphone
- speaker microphone
- standard microphone
- stereo microphone
- stereo microphones
- studio microphone
- subaqueous microphone
- supercardioid microphone
- superdirectional microphone
- talk-back microphone
- thermal microphone
- thermocouple microphone
- thermoelectric microphone
- throat microphone
- transistor microphone
- transistorized microphone
- unidirectional microphone
- variable-reluctance microphone
- velocity microphone
- wave-interference microphone
- wireless microphone
- zero-order gradient microphone -
88 microphone
- alloy microphone
- alloy-granule microphone
- ammonium-dihydrogen-phosphate microphone
- antinoise microphone
- astatic microphone
- band microphone
- barium-titanate microphone
- bidirectional microphone
- breast microphone
- breast-plate microphone
- built-in microphone
- button microphone
- capacitance microphone
- capacitor microphone
- carbon microphone
- carbon-capsule microphone
- carbon-granule microphone
- cardioid microphone
- ceramic microphone
- clip-on microphone
- close-speaking microphone
- close-talking microphone
- combination microphone
- condenser microphone
- contact microphone
- crossed coincident microphones
- crystal microphone
- diaphragmless microphone
- differential microphone
- directional microphone
- distributed microphones
- double-button microphone
- double-element microphone
- dynamic microphone
- ear microphone
- electret microphone
- electronic microphone
- electrostatic microphone
- figure-of-eight microphone
- first-order gradient microphone
- flame microphone
- flat microphone
- flat-pressure-response microphone
- four-capsule microphone
- glow-discharge microphone
- gradient microphone
- granule microphone
- granule-type microphone
- gun microphone
- hand microphone
- hand-held microphone
- hot-wire microphone
- hypercardioid microphone
- inductive microphone
- inductor microphone
- integral microphone
- interference tube microphone
- ionic microphone
- laboratory standard microphone
- lanyard microphone
- lapel microphone
- lavalier microphone
- lens microphone
- line microphone
- lip microphone
- low-impedance microphone
- machine-gun microphone
- magnetic microphone
- magnetic-armature microphone
- magnetostriction microphone
- mask microphone
- measuring microphone
- metal-insulator-piezoelectric semiconductor transducer microphone
- midget microphone
- moving-coil microphone
- moving-conductor microphone
- moving-iron microphone
- multiple microphone
- music-pickup microphone
- narrow-angle microphone
- noise-canceling microphone
- nondirectional microphone
- n-th order gradient microphone
- omnidirectional microphone
- parabolic-reflector microphone
- phase-shift microphone
- piezoelectric microphone
- pistol grip microphone
- polydirectional microphone
- pre-emphasized microphone
- pressure microphone
- pressure-actuated ribbon microphone
- pressure-gradient microphone
- probe microphone
- push-pull microphone
- reflector microphone
- RF capacitor microphone
- ribbon microphone
- rifle microphone
- robust microphone
- speaker microphone
- standard microphone
- stereo microphone
- stereo microphones
- studio microphone
- subaqueous microphone
- supercardioid microphone
- superdirectional microphone
- talk-back microphone
- thermal microphone
- thermocouple microphone
- thermoelectric microphone
- throat microphone
- transistor microphone
- transistorized microphone
- unidirectional microphone
- variable-reluctance microphone
- velocity microphone
- wave-interference microphone
- wireless microphone
- zero-order gradient microphoneThe New English-Russian Dictionary of Radio-electronics > microphone
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89 trumpet
-
90 морфологические\ особенности\ научного\ стиля
- авторская речь построена в первом лице множ. ч. "мы": 1) наука создана содружеством большого кол-ва учёных, 2) вовлечение читателей в процесс рассуждения и доказательства;we are coming to realise, we have taken in to be, the tube has shown us, we are beginning to see, we deal with, we are now speaking
- множественное скромности;As an illustration let us take the language of Euclidean geometry and algebra. (A.Einstein)
- широко употребляются безличные формы c it и конструкции с one;It should be borne in mind, it may be seen; one may write, one may show, one may assume, one can readily see
- заметное предпочтение отдаётся пассиву и неличным формам глагола;I use the same notation as previously --> The notation is the same as previously used.
- преобладание именных, а не глагольных конструкций даёт возможность большего обобщения, устраняя необходимость указывать время действия;when we arrived --> at the time of our arrival
- термины, обозначающие вещество или отвечённое понятие, употребляются в обеих числовых формах без сдвига лексического значения и могут определяться числительными;Normally two horizontal permeabilities are measured.
- сравнительно частое употребление настоящего продолженного и будущего вместо простого настоящего;To-day we are coming to realize that.... We are beginning to see that.... Finally, as long as the automaton is running,....
The information fed into this central control system will very often contain information concerning the functioning of the effectors themselves. (N.Wiener - Cybernetics...)
Source: I.V.A.See: scientific styleEnglish-Russian dictionary of stylistics (terminology and examples) > морфологические\ особенности\ научного\ стиля
См. также в других словарях:
Speaking tube — Speaking Speak ing, a. 1. Uttering speech; used for conveying speech; as, man is a speaking animal; a speaking tube. [1913 Webster] 2. Seeming to be capable of speech; hence, lifelike; as, a speaking likeness. [1913 Webster] {A speaking… … The Collaborative International Dictionary of English
speaking tube — n. a tube or pipe made to carry the voice, as from one part of a building or ship to another … English World dictionary
Speaking tube — A speaking tube or voicepipe is a device based around two cones connected by an air pipe through which speech can be transmitted over an extended distance. While its most common use was in intra ship communications, the principle was also used in … Wikipedia
speaking tube — speak′ing tube n. a tube for conveying the voice over a somewhat limited distance, as from one part of a ship to another • Etymology: 1825–35 … From formal English to slang
speaking tube — noun a tube for conveying the sound of a voice from one room to another • Hypernyms: ↑tube, ↑tubing … Useful english dictionary
speaking tube — a tube for conveying the voice over a somewhat limited distance, as from one part of a building or ship to another. [1825 35] * * * … Universalium
speaking tube — n. pipe or tube for carrying the voice over a short distance (from one room to another for example) … English contemporary dictionary
speaking tube — /ˈspikɪŋ tjub/ (say speeking tyoohb) noun a tube for conveying the voice to a distance, as from one part of a building to another …
speaking tube — noun Date: 1822 a pipe through which conversation may be conducted (as between different parts of a building) … New Collegiate Dictionary
speaking tube — noun a pipe for conveying a person s voice from one room or building to another … English new terms dictionary
speaking tube — noun (C) a pipe through which people in different rooms can talk to each other … Longman dictionary of contemporary English