thermionic a. 热离子的 [电] 热离 释义与例句 adj. 1. Involving the emission of electrons from a heated electrode. 相关短语 thermionic valve 热离子管，热阴极电子管 thermionic valves [医] 热离子管, 热电管(热阴极整流管) thermionic tube [电] 热离子管 thermionic tubes