几百瓦的灯泡用电阻调光那个电阻成本搞得不得了，呵呵

来源: tty 于 2006-11-19 11:52:57 [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.