更新时间：2024-05-07 00:33:56
thermionic valve
[物]热离子管；热阴极电子管
Noun:- electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
- the rationalization of power structure
- the gas adjustment maintains freshness
- the
- the ethyl alcohol precipitation method
- The settlers irrigated the aridland.
- the method of undetermined coefficient
- the Xue's
- the custom of having Spring-festival
- the translation of Buddhist Scriptures
- the shareholder represents the lawsuit
- the forceful suppression of minorities
- The long-distance bus runs hourly.
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