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接地柱總是斷裂或開(kāi)焊究竟是什么原因,? |
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點(diǎn)評(píng)
預(yù)緊扭矩是12.9并不是12.9級(jí)。估計(jì)就是個(gè)普遍的4.8級(jí)到5.8級(jí)的螺栓,。
說(shuō)到點(diǎn)子上了,,其他人都是胡扯
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