Chrome，
QQ浏览器
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![[基础]高中数学必修第二册 8.6空间直线、平面的垂直](//imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F6dbd6f66f97fe6faaddf5a607ed785e7edc9323b.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：12 时间：2024-06-19简介： -
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播放：16 时间：2024-06-20简介： -
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![[基础]高中数学必修第二册 8.2立体图形的直观图](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2Fc5cfeb35192983a067253d00c0f1201ab57ee1ed.jpg%40672w_378h_1c_%21web-search-common-cover)
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