The bending methods for elliptic and parabolic figure with variable-width mirror were discussed and the formula of variable-width for ladder-shaped mirrors was given.

 
  • 对用宽度变化的镜子压制椭圆柱面和抛物柱面的方法进行了系统的讨论,给出了梯形镜的宽度变化公式。
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