看下這個 qYf |Gv
EDGES !! or CURVE xD /9F18
R=5 !! Vertex radius of curvature 80 Y\|)
K=-1 !! Conic constant 6uKMCQ=h
H=5 !! Outer aperture height wwoweztER
O=0 !! Inner obscuration height {}m PEd b
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 -}4NT{E
SHIFT Y 1 !!偏移 c$`4*6
SWEEP AXIS 360 Z !!旋轉