很大原因是由于热处理不好或者含有杂质所以断裂。

来源: chufang 于 2022-08-10 08:16:41 [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.