用手拧紧后，换wrench转动1/4周， 1/2周，1周等等。

来源: needtime 于 2017-09-03 12:55:00 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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用手拧紧后， 换wrench转动1/4周， 1/2周，1周等等。