两者厚度一样，应该是材料的好坏之差

来源: MoonRiverMe 于 2020-08-13 10:00:10 [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.