应该没有反。那个nut一边是螺纹，一边有个缩口tonight the washer. 可能没拧紧，只用手拧了一下

来源: 让股票飞于 2023-11-12 18:28:28 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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