confocal paraboloids [数] 共焦抛物面
Off-Axis Paraboloids and Ellipsoids Mirrors 抛物面镜 ; 椭圆面镜 ; 扁圆面镜 ; 离轴抛物面反射镜
shell of hyperbolic paraboloids 双曲抛物面薄壳
axis paraboloids and ellipsoids mirrors 抛物面镜
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以上来源于: WordNet
N a geometric surface whose sections parallel to two coordinate planes are parabolic and whose sections parallel to the third plane are either elliptical or hyperbolic. Equations x²/a² ± y²/b² = 2cz 抛物面
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