Chrome，
QQ浏览器
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![人教A高中数学必修四2.2.2 向量减法运算及其几何意义[陈莹]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F70e39bddcb72a55a37c5aae228078fd6dbc8381d.jpg%40672w_378h_1c_%21web-search-common-cover)
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![人教A高中数学必修四2.3.3 平面向量的坐标运算[王偲陈]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2Fc84924d3f019c1daee8d61cae4b3fd33e9134b4b.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：20 时间：2024-06-19简介： -
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![人教A高中数学必修四2.2.2 向量减法运算及其几何意义[陈莹]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F70e39bddcb72a55a37c5aae228078fd6dbc8381d.jpg%40672w_378h_1c_%21web-search-common-cover)
![人教A高中数学必修四2.3.3 平面向量的坐标运算[王偲陈]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2Fc84924d3f019c1daee8d61cae4b3fd33e9134b4b.jpg%40672w_378h_1c_%21web-search-common-cover)
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