第一非静止接点在第一位置和第二位置之间的运动的区域包括一个燃弧区域。
The region of motion of the first non-stationary contact between the first position and the second position includes an arcing region.
第一非静止接点在第一位置和第二位置之间的运动的区域包括一个燃弧区域。
The region of motion of the first non-stationary contact between the first position and the second position includes an arcing region.
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