The experimental results show that within a certain voltage range the polarity of the surface charge will reverse as the DC voltage duration increases.
这与国外研究者认为的绝缘子表面电荷积聚会随着电压作用时间的增加逐渐增加，进而达到饱和的结果有着显著的不同。
The experimental results show that within a certain voltage range the polarity of the surface charge will reverse as the DC voltage duration increases.
这与国外研究者认为的绝缘子表面电荷积聚会随着电压作用时间的增加逐渐增加，进而达到饱和的结果有着显著的不同。
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