觉得？根据什么？根据重心一个点就定义的参照系？说相对论必须提参照系滴滴滴

来源: 参谋总长于 2012-12-12 04:17:32 [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.