| 单词 | thyratron | 
| 释义 | Word Frequency thyratron(ˈθaɪrəˌtrɒn) noun  electronics a gas-filled tube that has three electrodes and can be switched between an 'off' state and an 'on' state. It has been superseded, except for application involving high-power switching, by the thyristor  Word origin C20: originally a trademark, from Greek thura door, valve + -tron | 
	
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