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EDGES !! or CURVE 2Ejs{KUj
R=5 !! Vertex radius of curvature &\5T`|~)!
K=-1 !! Conic constant Ib!`ChZ
H=5 !! Outer aperture height &yYK%~}t[
O=0 !! Inner obscuration height RJGf@am&
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 8mMrGf[Q\
SHIFT Y 1 !!偏移 8XTVpf4
SWEEP AXIS 360 Z !!旋轉