thermionic work function.
热离子逸出功
A thermionic tube having five electrodes.
有五个电极的热离子管。
Alternately, electron emission may be by thermionic means.
可选地，电子发射可以通过热离子装置。
Impregnate with thorium oxide to increase thermionic emission.
注入镀氧化物使增加热电子发射。
The liberation of electrons from a hot wire is called thermionic emission.
电子从热灯丝逸出，叫做热电子发射。
Space thermionic auxiliary reactor a chemical reaction accompanied by the absorption of heat.
空间热离子辅助反应堆吸热的化学反应过程。
The results show that the efficiency approaches to that of the caesium thermionic energy converter.
结果表明其效率与铯热离子换能器相近。
Currently conventional thermionic cathode gun cannot satisfy people's requirement for high lightness and long gun.
传统的热阴极电子枪存在着工作温度高，启动慢等缺点。
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