定值平均曲率的曲面
surface of constant mean curvature
定值全曲率的曲面
surface of constant total curvature
正曲率的曲面
surface of positive curvature
截面曲率的Pinching
sectional curvature’s Pinching
曲面的高斯曲率
gaussian curvature of surface
曲面的平均曲率
mean curvature of surface
曲面曲率划分
division of curvature on surface
常曲率曲面
surface of constant curvature
平面曲率线极小曲面
planar lines of curvature minimal surface
曲率的不定线
indeterminate line of curvature
常平均曲率曲面
constant mean curvature surfaces
切曲率的线
line of tangential curvature