thermionic valve   (TTS Sound)

The thermionic_valve has 1 Senses.

• thermionic tube, tube, vacuum tube, thermionic valve, electron tube, thermionic vacuum tube
• 電子管, チューブ, 熱電子管, 真空管
• electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
• 空気を抜いたガラスあるいは金属の容器に電極を配置した装置