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接地体和接地极有何区别
2014-06-17
接地体和接地极按规范统称为接地装置。
在防雷接地描述中: 电气设备的某部分用金属与大地作良好的电气连接,称为接地。埋进地中并直接与大地接触的金属导体,称为接地体(或接地极)。兼作接地用...
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网站测试网站测试网站测试网站测试
2014-06-17
网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测...
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网站测试网站测试网站测试网站测试
2014-06-17
网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测...
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NEWS CENTER
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Time:
接地体和接地极有何区别
2014-06-17
接地体和接地极按规范统称为接地装置。
在防雷接地描述中: 电气设备的某部分用金属与大地作良好的电气连接,称为接地。埋进地中并直接与大地接触的金属导体,称为接地体(或接地极)。兼作接地用...
View Details
网站测试网站测试网站测试网站测试
2014-06-17
网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测...
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网站测试网站测试网站测试网站测试
2014-06-17
网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测试网站测...
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