看下這個 N2\{h(*u
EDGES !! or CURVE &ngG_y8}&
R=5 !! Vertex radius of curvature nYts[f9e
K=-1 !! Conic constant TY]-L1$
H=5 !! Outer aperture height o 76QQ+hP
O=0 !! Inner obscuration height } .'\IR
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 .Uh|V-
SHIFT Y 1 !!偏移 EbMG9
SWEEP AXIS 360 Z !!旋轉