English Dictionary

thermionic valve

名詞

歴史的

(chiefly historical) An electronic device incorporating electrons from a glowing cathode inside an evacuated glass tube, functioning as a switch, amplifier etc.

日本語の意味

真空管：発光する陰極から放出された電子を内部の真空状態のガラス管内で利用し、スイッチや増幅などの電気的機能を果たす電子部品（主に歴史的な用語）

The vintage radio's warm, crackling sound came from a single thermionic valve glowing softly in its chassis.

その古いラジオの暖かくパチパチいう音は、筐体の中でやわらかく光る一本の真空管から来ていた。

意味（1）

(chiefly historical) An electronic device incorporating electrons from a glowing cathode inside an evacuated glass tube, functioning as a switch, amplifier etc.

The age of electronics began in 1906 with Lee De Forest's invention of the vacuum tube, or, as the British (led by John Ambrose Fleming, whose work preceded De Forest's) described it, the thermionic valve.

thermionic valves （ plural ）