熱ねつ陰いん極きょく

noun

hot cathode

Technical term in electronics; a cathode that is heated to emit electrons, used in vacuum tubes and similar devices.

• 熱ねつ陰いん極きょくは真しん空くう管かんの重じゅう要ような部ぶ品ひんです。

  The hot cathode is an important component of vacuum tubes.