我以前也有过这个疑问，哈。维D有两种主要形式，D2和D3，D3活性更好。

来源: gladys 于 2024-11-15 15:36:57 [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.