Tube diode with directly or indirectly heated cathode.
具有直接或间接加热的阴极的电子管二极管。
Tube pentode with directly or indirectly heated cathode.
具有直接或间接加热的阴极的电子管五极管。
Tube tetrode with directly or indirectly heated cathode.
具有直接或间接加热的阴极的电子管四极管。
The hydrogen in the gauge is ionized by electron emission from a heated cathode.
在离子计内的氢气是用一个加热阴极放射电子来电离的。
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