The sag of the surface can be spherical, conic, aspheric, or defined by a polynomial or other parametric function.
表面的下弯(sag)可以是球面、圆锥面(conic)、非球面(aspheric)或借由多项式或其他函定义。
The sag of the surface can be spherical, conic, aspheric, or defined by a polynomial or other parametric function.
表面的下弯(sag)可以是球面、圆锥面(conic)、非球面(aspheric)或借由多项式或其他函定义。
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