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liu1980
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樓主  發(fā)表于: 2013-06-21 21:06
如題，書(shū)本上一般要求對地電阻、相間電阻0.5-1兆歐，就可使用，咱們領(lǐng)導卻要求500兆歐以上， 后來(lái)又改為200兆歐以上，達不到的不準收貨，頭大啊。
huoshi
為所當為
級別: 網(wǎng)絡(luò )英雄

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1樓  發(fā)表于: 2013-06-22 08:48
0.5兆歐以上就可以使用當然越大越好

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