The condition that plasma breakdown on Tokmak is get enough high loop voltage and large null field region in the vacuum vessel area.

托卡马克装置产生等离子体击穿的条件是在真空室区域中达到足够大的环电压以及尽可能大的零场区。

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The insulation characteristic of insulator in vacuum is researched in the process of the high voltage breakdown along the insulator surface in vacuum, which is called vacuum surface flashover.

绝缘子的真空表面绝缘特性研究真空下的高压沿绝缘子表面击穿物理过程，称真空表面闪络过程。

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Subsequently, the breakdown happened inside of the high-voltage vacuum apparatus was researched initially by means of scanning electron microscope analysis and vacuum apparatus dissection.

采用高压真空器件解剖、扫描电镜分析和高压脉冲耐压试验分析了高压真空器件内的真空击穿、陶瓷击穿。

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