这么简单的概念都有困难,怎么理解科学?
瓜皮在这里不是指表皮,而是大球减小球后的立体。理解一个
本帖于 2007-10-06 02:05:34 时间, 由版主 笑比哭好 编辑
这么简单的概念都有困难,怎么理解科学?
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy