在测试过程中活性的电子发射物质源源不断地从阴极沉积到阴极表面。
During the course of the testing, active electron-emission substances from the cathode were deposited continuously onto the surface of the grid.
在荧光灯启动时，电极上的发射物质(电子粉)溅散、损耗最为严重。
When the fluorescent lamp starts-up, the sputtering and waste of the missile on the electrode is most serious.
应用推荐