不知道啊，大概是电子管的吧，不过电子管太新式，还没人会用呢。

来源: Σ 于 2006-10-15 08:22:53 [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.