化学是搞笑，有谁知道：稀硝三八无，浓硝一四棕？

来源: 石牛于 2022-11-21 20:44:54 [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.