我朋友说每五年换一次极性棒，可以用三十年。不然最多十年。

来源: dudaan 于 2014-10-06 17:59:03 [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.