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1 upper frequencies
Телекоммуникации: верхние частоты (спектра) -
2 upper frequencies
• най-висока честота, при която дадена схема все още работиEnglish-Bulgarian polytechnical dictionary > upper frequencies
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3 upper frequencies
English-Russian dictionary of telecommunications and their abbreviations > upper frequencies
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4 най-висока честота, при която дадена схема все още работи
upper frequenciesupper frequencyБългарски-Angleščina политехнически речник > най-висока честота, при която дадена схема все още работи
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5 frequency
1) частота2) радиостанция•- A2A frequency
- absolute cutoff frequency
- acoustical frequency
- aircraft emergency frequency
- air-ground frequency
- alternative frequencies
- angular frequency
- assigned frequency
- audio-signals frequency
- authorized frequency
- auxiliary frequency
- beat frequency
- break frequency
- calling frequency
- carrier frequency
- center frequency
- central frequency
- channel frequency
- characteristic frequency
- chrominance frequency
- chrominance sampling frequency
- chrominance-carrier frequency
- circular transducing frequency
- clock frequency
- closed-loop frequency
- color-difference signal sampling frequency
- corner frequency
- critical flickering frequency
- crossover frequency
- cutoff frequency
- cyclotron frequency
- dedicated frequency
- difference frequency
- distress frequency
- divisible frequency
- dropout frequency
- extremely-high frequency
- extremely-low frequency
- field frequency
- filter frequency
- fixed frequency
- folding frequency
- frame frequency
- free-running frequency
- frequency of operation
- frequency of optimum traffic
- frequency of optimum transmission
- fundamental frequency
- fusion frequency
- gain-crossover frequency
- ground-to-air frequency
- group frequency
- guarded frequency
- H2A frequency
- harmonic frequency
- heterodyne frequency
- high frequency
- horizontal-line frequency
- horizontal-scanning frequency
- image frequency
- imaginary frequency
- infralow frequency
- instantaneous frequency
- intercarrier frequency
- intermediate frequency
- intrinsic frequency
- J2A frequency
- keying frequency
- knee frequency
- limiting frequency
- line control frequency
- line frequency
- lock-in frequency
- low frequency
- lower frequencies
- lower half-power frequency
- lowest-usable high frequency
- lowest-useful high frequency
- master frequency
- maximum modulating frequency
- maximum modulation frequency
- maximum operating frequency
- maximum usable frequency
- maximum-keying frequency
- medium frequency
- microwave frequency
- multiple frequency
- natural frequency
- nominal pass-band center frequency
- NON frequency
- normalized frequency
- note frequency
- Nyquist frequency
- operating frequency
- optical frequency
- optimum traffic frequency
- optimum transmission frequency
- optimum working frequency
- peak amplification frequency
- picture frequency
- power frequency
- precise frequency
- primary frequency
- protected frequency
- pulse-repetition frequency
- pump frequency
- pumping frequency
- quenching frequency
- R2A frequency
- radial frequency
- rated-network frequency
- reduced frequency
- reference frequency
- repetition frequency
- resonance frequency
- resonant frequency
- ringing frequency
- sampling frequency
- scanning frequency
- scanning line frequency
- second-channel frequency
- self-resonant frequency
- side frequency
- signal frequency
- slip frequency
- sound-carrier frequency
- spatial frequency
- speech frequency
- standard frequency
- subtelephone frequency
- super-high frequency
- supersonic frequency
- supertelephone frequency
- sweep frequency
- swept frequency
- tone frequency
- transition frequency
- translation frequency
- ultra-high frequency
- ultra-low frequency
- upper frequencies
- vertical frequency
- very-high frequency
- very-low frequency
- virtual-carrier frequency
- voice frequency
- wow frequencyEnglish-Russian dictionary of telecommunications and their abbreviations > frequency
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6 верхние частоты
1) Engineering: treble (звуковые)2) Telecommunications: higher frequencies, upper frequencies (спектра)3) Makarov: tremble4) Electrical engineering: (звуковые) treble -
7 верхние частоты
( спектра) upper frequenciesRussian-English dictionary of telecommunications > верхние частоты
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8 частота
frequency, rate* * *частота́ ж.
frequencyзахва́тывать частоту́ (напр. о системе АПЧ) радио — lock on a frequency (e. g., in AFC)настра́иваться на частоту́ зара́нее [предвари́тельно] радио — preset [preselect] a frequencyнастра́иваться на частоту́ — f радио tune to frequency fперемеща́ть частоту́ ( из одного диапазона в другой) свз. — translate a frequency (from hand to hand)переходи́ть на другу́ю частоту́ радио — shift to another frequencyприсва́ивать частоту́ — allocate a frequencyрабо́тать на частоте́ радио — operate at [on] a frequency of …сме́шивать часто́ты f1 и f2 радио — beat frequency f1, against frequency f2, heterodyne [f1 and f2 ]уде́рживать частоту́ (напр. о системе АПЧ) радио — hold on to a frequency (e. g., in AFC)частота́ автоколеба́ний — free-running frequencyчастота́ бие́ний — beat frequencyбли́зкие часто́ты — closely spaced frequenciesбокова́я частота́ — side frequencyчастота́ возбужде́ния — радио driving frequency; ( энергетического уровня) exciting frequencyчастота́ волны́ — wave frequencyчастота́ враще́ния мех. — rotational speedчастота́ вы́борки ( в теории информации) — sampling rateчастота́ вы́зовов свз. — calling frequency, calling rateвысо́кие часто́ты [вч] [m2](3—30 МГц) — high frequencies, HFчастота́ гармо́ник — harmonic frequencyгася́щая частота́ радио — quenching frequencyчастота́ генера́тора колеба́ний элк. — oscillator frequencyзатя́гивать частоту́ генера́тора колеба́ний — ( в результате колебаний полного сопротивления нагрузки) pull the oscillator frequency; ( в результате колебаний анодного тока или напряжения) push the oscillator frequencyчастота́ генера́ции элк. — oscillation [oscillating] frequencyчастота́ генера́ции ла́зера — laser frequencyчастота́ генера́ции ма́зера — maser frequencyгипервысо́кие часто́ты [гвч] — band-12 frequencies, decimillimetric-wave frequencies (Примечание. Точного эквивалента в английском языке нет.)гиперзвукова́я частота́ — hypersonic frequencyгиромагни́тная частота́ — Larmor (gyromagnetic) frequencyгироскопи́ческая частота́ — gyrofrequency, cyclotron frequencyграни́чная частота́1. frequency limit, limit(ing) frequency (см. тж. предельная частота)2. элк. (в большинстве случаев имеется в виду на уровне половины мощности сигнала; в противном случае делается оговорка) cut-off frequency (unless otherwise specified, the value of half-power is meant)грани́чная, ве́рхняя частота́ — upper frequency limitграни́чная, ве́рхняя частота́ ли́нии элк. — cut-off frequency of a lineграни́чная, ве́рхняя частота́ на у́ровне полови́нной мо́щности — upper half-power frequencyграни́чная частота́ (полосы пропускания, напр., усилителя) [m2]на у́ровне полови́нной мо́щности — half-power frequencyграни́чная, ни́жняя частота́ на у́ровне полови́нной мо́щности — lower half-power frequencyграни́чная частота́ усили́теля ( на уровне \ 2 максимального усиления) радио — cut-off frequency of an amplifier (where the gain of an amplifier falls below 0.707 times the maximum gain)далё́кие часто́ты — widely spaced frequenciesдискре́тная частота́ (фиксированная, в радиосвязи) — брит. spot frequency; амер. fixed frequencyнабира́ть дискре́тную частоту́ — set up a spot frequencyдиффузио́нная частота́ — diffusion frequencyдо́плеровская частота́ — Doppler frequency, Doppler shiftдро́бная частота́ — fractional frequencyзадаю́щая частота́ — driving frequencyчастота́ замира́ния ( радиосигнала) — rate of fadingзапасна́я частота́ — alternate frequencyчастота́ заполне́ния и́мпульса рлк. — basic [carrier] frequencyзвукова́я частота́ радио — audio frequency, af, AF; acoustical [sound] frequencyзвукова́я, ни́зкая частота́ ак. — bass (frequency)зерка́льная частота́ радио — image frequencyчастота́ излуче́ния ла́зера — laser frequencyчастота́ излуче́ния ма́зера — maser frequencyинфразвукова́я частота́ — infrasonic [subsonic] frequencyчастота́ ка́дров тлв. — frame [vertical] frequencyка́дровая частота́ тлв. — frame [vertical] frequencyчастота́ кадросме́н ( в кинематографе) — picture frequency, film speedка́жущаяся частота́ ( волны) мор. — encounter frequencyквазиопти́ческая частота́ — quasi-optical frequencyчастота́ квантова́ния ( сигнала по времени) — sampling rateчастота́ килево́й ка́чки — pitch frequencyчастота́ киносъё́мки — camera frequency, camera speedчастота́ колеба́ний — (механических и особ. электрических) oscillation frequency; ( механических) vibration frequencyкомбинацио́нная частота́ — heterodyne frequencyко́мплексная частота́ — complex frequencyконтро́льная частота́ ( ВЧ связь) — pilot frequencyкра́йне высо́кие часто́ты [квч] [m2](30—300 ГГц) радио — extremely-high frequencies, EHFкра́йне ни́зкие часто́ты [m2](0,3—3 кГц) радио — extremely low frequencies, ELFкра́тная частота́ — multiple frequencyкрити́ческая частота́ эл. — critical frequencyкрити́ческая частота́ волново́да — cut-off frequency of a waveguideкругова́я частота́ — angular [radian, circular] frequency, angular velocityмагнитогидродинами́ческая частота́ — magnetohydrodynamic frequencyмагнитопла́зменная частота́ — magnetoplasma frequencyмаксима́льно примени́мая частота́ [МПЧ] ( для ионосферной радиосвязи) — maximum usable frequencyмгнове́нная частота́ — instantaneous frequencyчастота́ мерца́ний тлв. — flicker frequencyминима́льно примени́мая частота́ ( для ионосферной радиосвязи) — lowest-useful (high) frequency, LUFчастота́ модуля́ции — modulating [modulation] frequencyчастота́ моле́кулы, враща́тельная — molecular rotation frequencyчастота́ нака́чки элк. — pump frequencyчастота́ настро́йки радио — resonant [tuning] frequencyпри значи́тельном отклоне́нии частоты́ настро́йки приё́мника от номина́льной … — when the resonant frequency of the receiver is greatly in error with respect to the assigned frequency …сполза́ть [уходи́ть] с частоты́ настро́йки — drift out of tuneуде́рживать [подде́рживать] частоту́ настро́йки — remain on tuneустана́вливать частоту́ настро́йки зара́нее — preset [preselect] desired frequencyнесу́щая частота́ — carrier frequencyформирова́ть несу́щую частоту́ (напр. передатчика) — generate the (e. g., transmitter) carrier (frequency)ни́зкие часто́ты [нч] [m2](30—300 кГц) радио — low frequencies, LFномина́льная частота́ — (особ. при расчетах) rated frequency; ( в значении вы́деленная, устано́вленная и т. п.) assigned frequencyнулева́я частота́ — zero frequencyчастота́ обраще́ния к па́мяти — operation rate of storageопти́ческая частота́ — optical [light] frequencyосновна́я частота́ ( в теории колебаний) — basic [base] frequency; fundamental frequencyчастота́ отка́зов — failure rateотноси́тельная частота́ — relative frequencyчастота́ отсе́чки — cut-off frequencyо́чень высо́кие часто́ты [овч] [m2](30—300 МГц) радио — very-high frequencies, VHFо́чень ни́зкие часто́ты [онч] [m2](3—30 кГц) радио — very-low frequencies, VLFчастота́ переключе́ний — switching frequencyперехо́дная частота́ элк. — crossover [transition] frequencyпла́зменная частота́ — plasma frequencyпла́зменная, ио́нная частота́ — ion plasma frequencyпла́зменная, крити́ческая частота́ — plasma cut-offпла́зменная, преде́льная частота́ — plasma cut-offчастота́ повторе́ния — repetition frequency, repetition rate, recurrence rateподнесу́щая частота́ — subcarrier (frequency)подтона́льная частота́ — subsonic [infrasonic, subaudio] frequencyчастота́ поле́й тлв. — field frequencyчастота́ полука́дров тлв. — field frequencyчастота́ попере́чных колеба́ний ( в аэродинамике) — frequency in roll, roll frequencyпоро́говая частота́ — threshold frequencyпредвари́тельно устано́вленная частота́ — preset frequencyпреде́льная частота́ — limiting frequency (см. тж. граничная частота)преде́льная частота́ усиле́ния ( транзистора) [m2]по то́ку ( в схеме с общей базой) — alpha [ ] cut-off frequency; ( в схеме с общим эмиттером) beta [ ] cut-off frequencyчастота́ преобразова́ния — conversion frequencyчастота́ преце́ссии — precessional frequencyприсво́енная частота́ — allocated [authorized] frequencyчастота́ продо́льных колеба́ний ( в аэродинамике) — frequency in pitch, pitch frequencyпромежу́точная частота́ — intermediate frequencyпромы́шленная частота́ — commercial [mains] frequencyчастота́ проникнове́ния — penetration frequencyпростра́нственная частота́ — spatial frequencyпростра́нственная, отрица́тельная частота́ — negative spatial frequencyпростра́нственная, положи́тельная частота́ — positive spatial frequencyчастота́ пульса́ции ( слабо пульсирующего тока) — ripple frequencyрабо́чая частота́ — operating [operational] frequency; ( для ионосферной радиосвязи) traffic [working] frequencyрабо́чая, оптима́льная частота́ [ОРЧ] ( для ионосферной радиосвязи) — optimum traffic frequency, OTF; optimum working frequency, OWFчастота́ развё́ртки — ( изображения) тлв. scanning frequency; ( луча) тлв., элк. sweep frequencyчастота́ развё́ртки, вертика́льная тлв. — vertical scanning frequencyразгово́рная частота́ — voice frequencyра́зностная частота́ — difference frequencyчастота́ рассе́яния — scattering frequencyчастота́ реже́кции — rejection [notch] frequencyрезона́нсная частота́ — resonance [resonant] frequencyчастота́ рису́нка ( в фототелеграфии) — picture frequencyчасто́ты рису́нка поступа́ют в кана́л свя́зи — the picture frequencies are transmitted into the lineсверхвысо́кие часто́ты1. (обычно в сокращении СВЧ; не путать с свч радиодиапазона) microwave frequencies (in Russian usage the term is usually abbreviated and written in upper-case letters. The lower-case term applies only to the SHF band.)2. (сокр. свч) (3—30 ГГц) ( сокращение свч относится только к сантиметровому диапазону) super-high frequencies, SHFсверхни́зкие часто́ты [снч] [m2](30—300 Гц) — extremely low frequencies, ELF, band 2 frequencies (frequencies from 30 to 300 Hz)частота́ свобо́дных колеба́ний ( колебательного контура) — natural resonant frequencyчастота́ се́ти — network frequencyчастота́ сигна́ла — signal frequencyсинхронизи́рующая частота́ — sync(hronizing) frequency; вчт. clock frequencyсинхро́нная частота́ — synchronous frequencyчастота́ скани́рования — scanning frequencyчастота́ скольже́ния эл. — slip frequencyчастота́ сле́дования и́мпульсов — pulse repetition [pulse recurrence] frequency, pulse recurrence rateчастота́ сле́дования пи́чков — spike frequencyслы́шимая частота́ — audio [acoustical] frequencyсо́бственная частота́ — natural frequencyчастота́ собы́тия ( в теории вероятностей) — frequency (of event)сопряжё́нная частота́ — break [corner] frequency; ( в АХЧ) автмт. corner frequency (in a Bode diagram)частота́ соударе́ний — collision frequencyсре́дние часто́ты [сч] (300 кГц—3 МГц) радио — medium frequencies, MFчастота́ сре́за ( фильтра) элк. — cut-off frequencyчастота́ сре́за САР автмт. — crossover frequencyчастота́ сры́ва колеба́ний радио — quench frequencyчастота́ строк тлв. — line [horizontal] frequencyстро́чная частота́ тлв. — line [horizontal] frequencyсумма́рная частота́ — sum frequencyчастота́ супериза́ции радио — quench frequencyта́ктовая частота́ вчт., изм. — clock rate, clock frequencyтона́льная частота́ — voice [speech] frequency, VFчастота́ то́чек тлв. — dot frequencyуглова́я частота́ — angular [radian, circular] frequency, angular velocityультравысо́кие часто́ты [увч] (300 МГц—3 ГГц) радио — ultra-high frequencies, UHFультразвукова́я частота́ — ultrasonic frequencyчастота́ усиле́ния по то́ку, преде́льная — current-amplification cut-off frequency, current-gain cut-off frequencyформа́нтная частота́ — formant frequencyчастота́ фо́рмы волны́ мор. — wave numberхарактеристи́ческая частота́ — characteristic frequencyхолоста́я частота́ ( в параметрическом усилителе) — idler frequencyхрони́рующая частота́ — timing frequencyцентра́льная частота́ (напр. полосы частот) — central [centre] frequencyцикли́ческая частота́ — angular [radian, circular] frequency, angular velocityциклотро́нная частота́ — cyclotron frequencyэтало́нная частота́ — standard frequency -
9 frequency
частота; периодичность ( включения чего-либо)
* * *
частота; повторяемость; периодичность
* * *
* * *
* * *
частота; повторяемость; периодичность- frequency of overhaul
- aliasing frequencies
- beam oscillation frequency
- beginning frequency of sweep
- breakdown frequency
- bubble oscillation frequency
- ending frequency of sweep
- failure frequency
- fault frequency
- folding frequency
- forced outage frequency
- inspection frequency
- oscillation frequency
- reject frequency
- repair frequency
- replacement part frequency
- seismic frequency
- seismometer resonant frequency
- singing frequency
- sweep frequencies
- test frequency
- trip frequencyАнгло-русский словарь нефтегазовой промышленности > frequency
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10 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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11 sum
1) сумма; итог || суммировать, складывать; подводить итог3) резюмировать•sum over sum — мат. сумма вдоль подпространства
sum taken over — сумма, взятая по…
to sum up — резюмировать, суммировать
to sum with respect to — суммировать по...
- free sum- rank sum- regression sum of squares- risk sum- row sum- sum of squares for contrasts- unit sum
См. также в других словарях:
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Frequencies (album) — Infobox Album Name = Frequencies Type = studio Artist = LFO Released = July 22, 1991 Recorded = Genre = electronic, IDM Length = 54:42 Label = Flagicon|UK Warp Records Flagicon|USA Tommy Boy/Warner Bros. Records Producer = Reviews = * Allmusic… … Wikipedia
North American broadcast television frequencies — The North American broadcast television frequencies are on designated television channels numbered 2 through 69, approximately between 54 and 806 MHz. Traditionally, the frequencies are divided into two sections, the very high frequency (VHF)… … Wikipedia
ABC Upper Hunter — Radio station name = 1044 ABC Upper Hunter callsigns = 2UH, 2HVR airdate = 1964 (as relay of 2NC) 1990 (local programs commenced) frequency = 1044 kHz AM and 105.7 mHz FM Upper Hunter 101.9 mHz FM Merriwa 96.9 mHz FM Murrurundi area = Upper… … Wikipedia
sound reception — Introduction response of an organism s aural mechanism, the ear, to a specific form of energy change, or sound waves. Sound waves can be transmitted through gases, liquids, or solids, but the hearing function of each species is particularly … Universalium
Bat detector — The term bat detector is usually used to describe a device used to detect the presence of bats by converting their echolocation ultrasound signals to audible frequencies as they are emitted by the bats. There are other types of detector which… … Wikipedia
motion-picture technology — Introduction the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… … Universalium
Digital radio in the United Kingdom — A typical DAB digital radio receiver with the Digital Radio Development Bureau DAB digital radio marketing logo In the United Kingdom, the roll out of digital radio is proceeding since test transmissions were started by the BBC in 1990. The UK… … Wikipedia
Digital speakers — are a form of loudspeaker technology. Not to be confused with modern digital formats and processing, they are a mature technology, having been experimented with extensively by Bell Labs as far back as the 1920s. Contents 1 Principle of operation… … Wikipedia
Reggae — Infobox Music genre name = Reggae color = green bgcolor = white stylistic origins = R B, Jazz, Blues, Mento, Calypso, Ska, Rocksteady cultural origins = Late 1960s Jamaica, especially Kingston instruments = Bass Drums Guitar Organ Brass… … Wikipedia
RF connector — Male Type N RF connector. A coaxial RF connector is an electrical connector designed to work at radio frequencies in the multi megahertz range. RF connectors are typically used with coaxial cables and are designed to maintain the shielding that… … Wikipedia