Chrome，
QQ浏览器
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![[圆锥曲线2]椭圆第二定义＆椭圆基本性质、基本量](//imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F8972033dfc8cec17f5d288844b0bd15d1850ae56.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：10 时间：2024-06-19简介：
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![[圆锥曲线2]椭圆第二定义＆椭圆基本性质、基本量](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F8972033dfc8cec17f5d288844b0bd15d1850ae56.jpg%40672w_378h_1c_%21web-search-common-cover)
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