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1 valvola termoionica
"thermionic valve, thremionic tube;Röhre;valvula (elet.-radio)" -
2 termoionico
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3 valvola
f valveelectronics fusevalvola dell'aria air valve* * *valvola s.f.1 (mecc.) valve: valvola a cerniera, flap valve (o flapper); valvola a due vie, two-way valve; valvola a farfalla, butterfly valve, ( di carburatore) throttle valve; valvola a fodero, sleeve valve: valvola a saracinesca, gate (o sluice) valve; valvola a sfera, ball valve; valvola della camera d'aria, inner tube valve; valvola di ammissione, inlet valve; valvola di aspirazione, intake valve; valvola di scarico, exhaust valve; valvola di sicurezza, safety valve; lo sport è la sua valvola di sfogo, (fig.) sport is his outlet (o safety valve)2 (elettr.) valve, tube: valvola elettronica, termoionica, electron, thermionic valve; apparecchio a sei valvole, six-valve set; valvola fusibile, fuse; è saltata una valvola, a fuse has blown* * *['valvola]sostantivo femminile1) mecc. valve2) el. fuse3) (di radio, TV) valve BE, electron tube AE4) anat. valve•valvola a farfalla — mecc. butterly valve, throttle (valve)
valvola di scarico — mecc. escape o exhaust o outlet valve; fig. safety valve
valvola di sfogo — mecc. snifting valve; fig. safety valve
valvola di sicurezza — mecc. safety o relief valve
* * *valvola/'valvola/sostantivo f.1 mecc. valve2 el. fuse; sono saltate le -e the fuses have blown4 anat. valvevalvola a farfalla mecc. butterly valve, throttle (valve); valvola di scarico mecc. escape o exhaust o outlet valve; fig. safety valve; valvola di sfogo mecc. snifting valve; fig. safety valve; valvola di sicurezza mecc. safety o relief valve.
См. также в других словарях:
thermionic — ► ADJECTIVE ▪ relating to the emission of electrons from substances heated to very high temperatures … English terms dictionary
thermionic — adj. of or relating to electrons emitted from a substance at very high temperature. Phrases and idioms: thermionic emission the emission of electrons from a heated source. thermionic valve (US tube) a device giving a flow of thermionic electrons… … Useful english dictionary
thermionic — adjective concerning the emission of electrons from a heated electrode See Also: thermion, thermionic valve … Wiktionary
thermionic — /θɜmiˈɒnɪk/ (say thermee onik) adjective relating to thermionics or thermions: thermionic emission …
thermionic emission — n. the phenomenon of electron or ion emission from the heated surface of a conductor * * * ▪ physics discharge of electrons from heated materials, widely used as a source of electrons in conventional electron tubes (e.g., television picture … Universalium
thermionic current — n. a current resulting from directed thermionic emission, as the flow of emitted electrons from a heated cathode to the plate … English World dictionary
thermionic tube — n. an electron tube having a cathode electrically heated in order to cause electron or ion emission: Also [Brit., etc.] Brit. thermionic valve … English World dictionary
thermionic emission — n. the phenomenon of electron or ion emission from the heated surface of a conductor … English World dictionary
thermionic converter — thermionic converter, an electronic device that changes heat directly into electricity. It consists of two metallic electrodes held in a tube at different temperatures and separated by a gas at low pressure. When the electrons on the surface of… … Useful english dictionary
Thermionic converter — A thermionic converter consists of a hot electrode which thermionically emits electrons over a potential energy barrier to a cooler electrode, producing a useful electric power output. Caesium vapor is used to optimize the electrode work… … Wikipedia
Thermionic emission — Closeup of the filament on a low pressure mercury gas discharge lamp showing white thermionic emission mix coating on the central portion of the coil. Typically made of a mixture of barium, strontium and calcium oxides, the coating is sputtered… … Wikipedia
