Chrome，
QQ浏览器
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播放：0 时间：2025-08-16简介： -
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播放：0 时间：2025-08-15简介： -
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![【获奖】冀教版初中数学九上《26.4 解直角三角形的应用》[薛老师]【市一等奖】优质课公开课教学视频](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F74a1bd7b8fbd52419fb8bdc14ebc1412f47c0d69.jpg%40672w_378h_1c_%21web-search-common-cover)
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![【获奖】冀教版初中数学九上《26.4 解直角三角形的应用》[薛老师]【市一等奖】优质课公开课教学视频](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F74a1bd7b8fbd52419fb8bdc14ebc1412f47c0d69.jpg%40672w_378h_1c_%21web-search-common-cover)
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