family of confocal conics的意思|示意
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共焦圆锥曲线族
family of confocal conics的网络常见释义
共焦二次曲线族 ... 圆族 family of circles 共焦二次曲线族 family of confocal conics 共焦抛物线族 family of confocal parabolas ...
family of confocal conics相关短语
1、 family of confocal centred conics 共焦有心二次曲线族