观察到了阴极斑点孔洞内部结构细节，获得了新的结果。
The details of the structure inside the cathode spot holes were observed and some new important results were obtained.
研究了纯石墨和铜-石墨材料的阴极斑点的特性及真空电弧截流现象。
In the paper, the cathode spot movements and chopping current of pure graphite and copper-impregnated metallized graphite (Cu-C) in vacuum were investigated.
阴极斑点优先在材料承载电压能力低的弱相表面形成，弱相尺寸、形貌和分布决定了阴极斑点的几何特征。
Arc erosion pattern shows that spot craters locate on the phases with weak voltage withstanding, whose size, morphology and distribution determine the character of the arc spots.
阴极斑点优先在材料承载电压能力低的弱相表面形成，弱相尺寸、形貌和分布决定了阴极斑点的几何特征。
Arc erosion pattern shows that spot craters locate on the phases with weak voltage withstanding, whose size, morphology and distribution determine the character of the arc spots.
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