你愛咋說咋說唄，你還能把m1v1+m2v2=m1v1'+m2v2'推翻了？

來源: 殺雨於 2010-04-05 17:47:33 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.