Because of its small screening radius and short delay time, graphite is chosen as the cathode material.
在电子束产生过程中，屏蔽半径应尽可能地小，且击穿延时时间较短，故选择石墨作为阴极材料。
The material destruction of the war was not so great but that it could by this time have been repaired, had a good peace been made without delay.
假若当时立即恢复了和平，和让正在物量方面的破坏不管怎样大，到一也能够得到建复了。
The influences of the rheological properties, injection content and delay time of gas injection on material distribution and gas penetration are investigated.
考察了材料流变性能、注射量和气体注射延迟时间对材料层厚分布及气体在熔体中穿透的影响规律。
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