我真老土，才知道f=ma是物理竞赛 ^_^

来源: 喵儿爸于 2023-02-16 21:30:21 [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.