词典
例句
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简体中文
pencil of parallel lines
pencil of planes
pencil of quadratic curves
pencil of quadric hypersurfaces
pencil of quadrics
pencil of rays
pencil of spheres
pencil ore
pencil percussion
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pencil of quadrics
➞
pencil of quadrics
Definitions
[1]
[数]
二次曲面束
哈罗摩托-百万摩友的摩托车之家！
🎥 Insta360 One R 多镜头运动相机，德国包邮
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pencil of quadrics