用手擰緊後，換wrench轉動1/4周， 1/2周，1周等等。

來源: needtime 於 2017-09-03 12:55:00 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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用手擰緊後， 換wrench轉動1/4周， 1/2周，1周等等。