看下這個 9.'h^#C
EDGES !! or CURVE }En
R=5 !! Vertex radius of curvature De7Ts
K=-1 !! Conic constant F+R?a+e
H=5 !! Outer aperture height =_$Qtq+h
O=0 !! Inner obscuration height 4[Z\
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CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 1b=lpw1}
SHIFT Y 1 !!偏移 W} WI; cI
SWEEP AXIS 360 Z !!旋轉