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单词 plasma diode
释义 plasma diode
[`plaz·mǝ `dī´ōd]
ELECTRONICS
A diode used for converting heat directly into electricity; it consists of two closely spaced electrodes serving as cathode and anode, mounted in an envelope in which a low-pressure cesium vapor fills the interelectrode space; heat is applied to the cathode, causing emission of electrons.
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