Definition

Examples

• 老式的收音机里有很多电子管。
  Lǎo shì de shōuyīnjī lǐ yǒu hěnduō diàn zǐ guǎn.
  Old-fashioned radios have many vacuum tubes.
• 这种电子管现在已经很少用了。
  Zhè zhǒng diàn zǐ guǎn xiànzài yǐjīng hěn shǎo yòng le.
  This type of electron tube is rarely used now.
• 电子管是早期电子设备的核心部件。
  diàn zǐ guǎn shì zǎoqī diànzǐ shèbèi de héxīn bùjiàn.
  Electron tubes were core components of early electronic devices.