降20伏的变压器估计没有，倪确定是电压问题？

来源: smilysnoopy 于 2009-04-07 21:13:41 [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.