Chrome，
QQ浏览器
.
![[高中物理]彻底搞懂！弹簧/杆/绳突变模型！把握本质拿下牛二瞬时问题！](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2Fedfcc8b312d8730a556a93af2f5e0898ad8a0b97.jpg%40672w_378h_1c_%21web-search-common-cover)
![[中考物理]一口气学完《滑轮》所有考点！系统教学由易到难，不怕学不会！](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F65d042812a260be1af512dc323f164cb7a7d468d.png%40672w_378h_1c_%21web-search-common-cover)
.