5024| 6
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鉸制孔螺栓如何使用,? |
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點(diǎn)評(píng)
一起加工,這不太現(xiàn)實(shí),。實(shí)際中這是兩個(gè)孔需要兩把鉆頭,,換鉆頭必然會(huì)有偏差。
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