Chrome，
QQ浏览器
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![北师大数学八上《2.7二次根式及性质》[朱老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F75cb017777c35d1f270f603e38f1e9514b8e01b5.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：7 时间：2024-06-19简介： -
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![北师大数学八上《2.7二次根式及性质》[朱老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F75cb017777c35d1f270f603e38f1e9514b8e01b5.jpg%40672w_378h_1c_%21web-search-common-cover)
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