... hollow drill steel ==> 中空钻探钢 hollow electrode ==> 中空电极 hollow electron beam ==> 中空电子束 ...
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这个实验结果也被钢厂15吨电炉中空电极吹氩的工业试验所证实。
The result was confirmed by the trial of argon blowing through a hollow electrode in a 15-ton arc furnace.
基极中空穴的密度小于发射极和集电极中自由电子的密度。
The density of holes in the base is less than the density of free electrons in the emitter and collector .
一种芯片型空气放电保护组件的制备方法，包括有铜电极偶制备步骤以及中空气室 制备步骤；
The invention provides a preparation method of a chip-typed air discharging protection component, comprising a copper electrode couple preparation step and a hollow air chamber preparation step.
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