选择题:变极距型电容式位移传感器的灵敏度S()1 反比与两极板之间的距离δ2 等于常数3 反比与两极板之间的

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题目内容:
变极距型电容式位移传感器的灵敏度S()
1 反比与两极板之间的距离δ
2 等于常数
3 反比与两极板之间的距离的平方δ2
4 正比于极板的正对面积A
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