根源是青花矾红(硅酸盐学会术语).只是当时无专利.

来源: 国公于 2014-03-12 09:50:48 [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.