被锁“材料力学 I 22 最大平面切应力”链接

知乎

https://www.zhihu.com/zvideo/1618980306018652160

西瓜视频

https://www.ixigua.com/7209562007832363559?logTag=5af4d53ef4de59d5b90f

抖音

https://www.douyin.com/user/self?modal_id=7209561902198885692&showTab=post