第一张是负极。腐蚀的地方在正极上，照片不太清楚

来源: tteddy 于 2014-01-18 10:11:16 [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.