看下這個 * Oyic3F
EDGES !! or CURVE H\^5>ccU>V
R=5 !! Vertex radius of curvature SZvw>=)a
K=-1 !! Conic constant "wexG]R=5
H=5 !! Outer aperture height <(#cPV@j
O=0 !! Inner obscuration height 0#sk ]Qz
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 'HW(RC0dR
SHIFT Y 1 !!偏移 ~g>15b3
SWEEP AXIS 360 Z !!旋轉