金属表面达到一定精度和光洁度，表面是会产生附着力。

来源: 信笔由墨于 2021-07-23 18:23:31 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.