pole spacing meaning in Chinese

杆挡
杆档
杆距
极距

Ratio of the pole spacing to the bore diameter of the pole pieces
极靴的间距与孔径比
Electron gun is the foremost parts of twt , it can produce electron beam with a certain shape and current , in order to guarantee the reliability and security of work , it ’ s design have to meet to the requirement not only of electric parameter , but also all kinds of subsidiary characteristics such as filament pyrogenation efficiency , warm up time , shape size , pole space capacitance and the ability to be able to bear the press and all kinds of rigorous run conditions such as high temperature , high humidity , low air pressure , strong vibration and great strike
由于行波管的大功率和高频率等特性,目前还没有任何其他的器件可以代替。行波管是应用高频电磁场与电子注进行互作用的机理进行工作的,而电子枪是行波管中产生电子注并使它成型的基本部件,电子枪的结构设计决定了枪体自身必须具有良好的抗振可靠性,否则结构发生共振或振动位移过量,就会导致行波管的失效。因此对行波管电子枪的研究具有非常重要的意义。