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1 диапазон криогенных температур
1) Engineering: cryogenic-temperature range2) Coolers: cryogenic cryotemperature ramp, cryogenic temperature rampУниверсальный русско-английский словарь > диапазон криогенных температур
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2 диапазон
band, excursion, interval, range, scope, span, zone* * *диапазо́н м.1. range; ( часть диапазона) bandв диапазо́не — over the rangeвыде́рживать (напр. усиление) [m2]постоя́нным по диапазо́ну — maintain (e. g. gain) constant over the range [band]переключа́ть диапазо́н — change [select, switch] bandsпо диапазо́ну — over the range [band]2. (объём, охват) gamut, spectrumвеща́тельный диапазо́н — broadcast bandвеща́тельный, станда́ртный диапазо́н — standard broadcast bandдиапазо́н волн — ( в длинах волн) wave band; ( в единицах частоты) frequency bandдиапазо́н вы́держек кфт. — exposure rangeдиапазо́н высо́т полё́та — fight altitude envelopeдиапазо́н гектометро́вых волн — hectometric wave [medium-frequency, MF] bandдиапазо́н гро́мкости — volume rangeдиапазо́н декаметро́вых волн — decametric wave [high-frequency, HF] bandдиапазо́н дециметро́вых волн — decimetric wave [ultrahigh frequency, UHF] bandдинами́ческий диапазо́н — dynamic rangeдиапазо́н досры́вных скоросте́й полё́та — unstalled flight rangeдиапазо́н дроссели́рования — throttling bandдиапазо́н замира́ний — fading rangeдиапазо́н за́писи, полночасто́тный — high-fidelity [full-frequency] recording rangeдиапазо́н затя́гивания радио — pulling rangeдиапазо́н захва́та ( в системе АПЧ) — lock-in rangeдиапазо́н измене́ния регули́руемой величины́ — control rangeдиапазо́н измере́ний — range of measurementдиапазо́н километро́вых волн — kilometric wave [low-frequency, LF] bandдиапазо́н криоге́нных температу́р — range of cryogenic temperature(s)люби́тельский диапазо́н радио — amateur bandдиапазо́н метро́вых волн — metric wave [very-high-frequency, VHF] bandдиапазо́н миллиметро́вых волн — millimetric wave [extremely high-frequency, EHF] bandдиапазо́н мириаметро́вых волн — miriametric wave [very-low-frequency, VLF] bandдиапазо́н настро́йки1. tuning range2. ( уставок) range of adjustmentдиапазо́н непреры́вных значе́ний мат. — continuum of valuesдиапазо́н ни́зких часто́т1. ( часть общего спектра электромагнитных колебаний) low-frequency band2. (часть рабочего диапазона приемника, усилителя и т. п.) low-frequency range; ( по отношению к тракту передатчика или приемника) audio-frequency rangeдиапазо́н ослабле́ния — attenuation rangeдиапазо́н оши́бок вчт. — error rangeперекрыва́емый диапазо́н — range of coverageдиапазо́н перехва́та — interception rangeдиапазо́н по́иска ( в системе АПЧ) — search rangeрабо́чий диапазо́н — (напр. шкалы) effective range; (напр. температур) operating rangeрадиовеща́тельный диапазо́н — broadcast bandрадиовеща́тельный, коротково́лновый диапазо́н — short-wave broadcast bandдиапазо́н регули́рования ( управления) — control rangeдиапазо́н регулиро́вки зажига́ния — timing rangeдиапазо́н сантиметро́вых волн — centimetric wave [superhigh frequency, SHF] bandдиапазо́н сверхзвуковы́х скоросте́й — supersonic rangeСВЧ диапазо́н — microwave range, microwave bandдиапазо́н свя́зи — communication bandдиапазо́н синхрониза́ции ( в генераторе развёртки) — lock-in rangeдиапазо́н скоросте́й — velocity range, velocity intervalдиапазо́н слеже́ния ( в системе АПЧ) — hold-in rangeдиапазо́н слы́шимости — range of bearingдиапазо́н сре́дних часто́т1. ( часть общего спектра электромагнитных колебаний) medium-frequency band2. (часть рабочего диапазона приемника, усилителя и т. п.) mid-band frequency [mid-frequency] rangeтелевизио́нный диапазо́н — television (broadcast) bandдиапазо́н температу́р — temperature span, temperature intervalдиапазо́н центро́вок ав. — range of centre of gravity positionsдиапазо́н часто́т — frequency range; frequency bandрастя́гивать диапазо́н часто́т — spread a (frequency) range [band]диапазо́н часто́т, номина́льный — assigned frequency bandдиапазо́н часто́т свя́зи — communication bandдиапазо́н эксплуатацио́нных режи́мов полё́та — flight envelopeдиапазо́н экспози́ций кфт. — exposure range -
3 диапазон
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4 Chevenard, Pierre Antoine Jean Sylvestre
SUBJECT AREA: Metallurgy[br]b. 31 December 1888 Thizy, Rhône, Franced. 15 August 1960 Fontenoy-aux-Roses, France[br]French metallurgist, inventor of the alloys Elinvar and Platinite and of the method of strengthening nickel-chromium alloys by a precipitate ofNi3Al which provided the basis of all later super-alloy development.[br]Soon after graduating from the Ecole des Mines at St-Etienne in 1910, Chevenard joined the Société de Commentry Fourchambault et Decazeville at their steelworks at Imphy, where he remained for the whole of his career. Imphy had for some years specialized in the production of nickel steels. From this venture emerged the first austenitic nickel-chromium steel, containing 6 per cent chromium and 22–4 per cent nickel and produced commercially in 1895. Most of the alloys required by Guillaume in his search for the low-expansion alloy Invar were made at Imphy. At the Imphy Research Laboratory, established in 1911, Chevenard conducted research into the development of specialized nickel-based alloys. His first success followed from an observation that some of the ferro-nickels were free from the low-temperature brittleness exhibited by conventional steels. To satisfy the technical requirements of Georges Claude, the French cryogenic pioneer, Chevenard was then able in 1912 to develop an alloy containing 55–60 per cent nickel, 1–3 per cent manganese and 0.2–0.4 per cent carbon. This was ductile down to −190°C, at which temperature carbon steel was very brittle.By 1916 Elinvar, a nickel-iron-chromium alloy with an elastic modulus that did not vary appreciably with changes in ambient temperature, had been identified. This found extensive use in horology and instrument manufacture, and even for the production of high-quality tuning forks. Another very popular alloy was Platinite, which had the same coefficient of thermal expansion as platinum and soda glass. It was used in considerable quantities by incandescent-lamp manufacturers for lead-in wires. Other materials developed by Chevenard at this stage to satisfy the requirements of the electrical industry included resistance alloys, base-metal thermocouple combinations, magnetically soft high-permeability alloys, and nickel-aluminium permanent magnet steels of very high coercivity which greatly improved the power and reliability of car magnetos. Thermostatic bimetals of all varieties soon became an important branch of manufacture at Imphy.During the remainder of his career at Imphy, Chevenard brilliantly elaborated the work on nickel-chromium-tungsten alloys to make stronger pressure vessels for the Haber and other chemical processes. Another famous alloy that he developed, ATV, contained 35 per cent nickel and 11 per cent chromium and was free from the problem of stress-induced cracking in steam that had hitherto inhibited the development of high-power steam turbines. Between 1912 and 1917, Chevenard recognized the harmful effects of traces of carbon on this type of alloy, and in the immediate postwar years he found efficient methods of scavenging the residual carbon by controlled additions of reactive metals. This led to the development of a range of stabilized austenitic stainless steels which were free from the problems of intercrystalline corrosion and weld decay that then caused so much difficulty to the manufacturers of chemical plant.Chevenard soon concluded that only the nickel-chromium system could provide a satisfactory basis for the subsequent development of high-temperature alloys. The first published reference to the strengthening of such materials by additions of aluminium and/or titanium occurs in his UK patent of 1929. This strengthening approach was adopted in the later wartime development in Britain of the Nimonic series of alloys, all of which depended for their high-temperature strength upon the precipitated compound Ni3Al.In 1936 he was studying the effect of what is now known as "thermal fatigue", which contributes to the eventual failure of both gas and steam turbines. He then published details of equipment for assessing the susceptibility of nickel-chromium alloys to this type of breakdown by a process of repeated quenching. Around this time he began to make systematic use of the thermo-gravimetrie balance for high-temperature oxidation studies.[br]Principal Honours and DistinctionsPresident, Société de Physique. Commandeur de la Légion d'honneur.Bibliography1929, Analyse dilatométrique des matériaux, with a preface be C.E.Guillaume, Paris: Dunod (still regarded as the definitive work on this subject).The Dictionary of Scientific Biography lists around thirty of his more important publications between 1914 and 1943.Further Reading"Chevenard, a great French metallurgist", 1960, Acier Fins (Spec.) 36:92–100.L.Valluz, 1961, "Notice sur les travaux de Pierre Chevenard, 1888–1960", Paris: Institut de France, Académie des Sciences.ASDBiographical history of technology > Chevenard, Pierre Antoine Jean Sylvestre
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