电子管 (diàn zǐ guǎn) — electron tube, vacuum tube, valve
Definition
A vacuum-sealed glass tube that controls electron flow, used as the core component in early radios, TVs, and amplifiers before transistors replaced it. Largely obsolete now except in high-end audio and some specialized equipment.
noun
electron tubevacuum tubevalve
Measure word · 只
Examples
- 电子管。Lǎo shì de shōu yīn jī lǐ yǒu hěn duō diàn zǐ guǎn.Old-fashioned radios have many vacuum tubes.
- 电子管。Zhè zhǒng diàn zǐ guǎn xiàn zài yǐ jīng hěn shǎo yòng le.This type of electron tube is rarely used now.
- 电子管。diàn zǐ guǎn Shì zǎo qī diàn zǐ shè bèi de hé xīn bù jiàn.Electron tubes were core components of early electronic devices.
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