同义词
n.
electron tube
，
thermionic tube
，
thermionic valve
，
tube
英文解释
n.
1.electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envel
网络释义
thermionic vacuum tube
电子管; 热阴极真空管; 释义：热离子真空管;
vacuum thermionic tube detector
真空热离子管检波器;