栅控行波管 meaning in English

grid control twt

General specification for grid control travelling - wave tube modulator of airborne radar
机载雷达用栅控行波管调制器通用规范
General specification for the grid control travelling - wave tube titanium getter pump power supply of airborne radar
机载雷达用栅控行波管钛泵电源通用规范
General specification for the grid control travelling wave tube combined high voltage power supply of airborne radar
机载雷达用栅控行波管组合高压电源通用规范