| 单词 | thermionic valve |
| 释义 | thermionic valvenoun British.vacuum tube. Origin of thermionic valveFirst recorded in 1915–20 Words nearby thermionic valvethermionic, thermionic current, thermionic emission, thermionics, thermionic tube, thermionic valve, thermistor, Thermit, thermite, thermite process, thermo- Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for thermionic valvethermionic valve esp US and Canadian thermionic tubenounan electronic valve in which electrons are emitted from a heated rather than a cold cathode Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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