英语词汇“vacuum tube”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	vacuum tube
释义	vacuum tube 1. Also called, esp. Brit., vacuum valve. an electron tube from which almost all air or gas has been evacuated: formerly used extensively in radio and electronics. 2. a sealed glass tube with electrodes and a partial vacuum or a highly rarefied gas, used to observe the effects of a discharge of electricity passed through it. [1775-85]
随便看	circle of convergence circle of curvature circle of declination circle of least confusion circle-out circlet Circleville circling disease circuit circuit analyzer circuit binding circuit board circuit breaker circuit court circuit court of appeals circuit edges circuiter circuit judge circuitous circuit rider circuitry circuity circular circular definition circular dichroism

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