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wangxiaomin:估计就是丝杆上有异物了[表情] (2018-09-08 20:59)
smt167967:感觉有可能是。那咋整?必须把丝杆拆了清理吗?拆掉之后装好要校正吧。 (2018-09-11 12:34)
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