Chrome，
QQ浏览器
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播放：2 时间：2025-08-22简介： -
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![全91集【2025新教材 北师大版数学七年级上册/下册]2025新教材北师大版数学，七年级数学上下册数学视频课本同步精讲(同步练习题)](//imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F659f35a5c2a93b8ef34f0a99a3a67140c3dbccc9.jpg%40672w_378h_1c_%21web-search-common-cover)
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![[初三数学10]圆的概念、垂径定理、圆周角定理](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F5bab82ee6416058a5269041132374d34914731a1.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：3 时间：2025-08-18简介：
![全91集【2025新教材 北师大版数学七年级上册/下册]2025新教材北师大版数学，七年级数学上下册数学视频课本同步精讲(同步练习题)](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F659f35a5c2a93b8ef34f0a99a3a67140c3dbccc9.jpg%40672w_378h_1c_%21web-search-common-cover)
![[初三数学10]圆的概念、垂径定理、圆周角定理](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F5bab82ee6416058a5269041132374d34914731a1.jpg%40672w_378h_1c_%21web-search-common-cover)
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