斜截半椭圆柱面
oblique-cut semi-elliptic cylinder shell
椭圆斜筒体结构
oblique elliptic column structure
斜圆柱
obligue cylinder
oblique circular cylinder
密绕椭圆截面螺线管
close oval-shaped spiral tube
双椭圆截面
double-ellipse cross-section
椭圆截面的Abel逆变换
Elliptical Abel transformation