讲到微积分，说实话，有几个工程师在工作上用得着？

来源: 细草微风于 2013-01-28 20:36:03 [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.