以前聽兩個數學博士生聊天，其中一個說物理的力很簡單，就是數學的second derivative。

來源: BeLe 於 2023-04-06 20:51:25 [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.