22cm
22cm-
230cm divided by 22cm is 10.45cm .
230厘米除以22厘米等于10.45厘米。
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Methods 20 examples of closed curves with all kinds of shapes were created and the square of the curves were between 22 × 22cm 2 and 2 × 2cm 2 . Two tests were adopted to shape the MLC : a.
方法：随机生成20例形状各异的面积界于22×22cm2和2×2cm2二维封闭曲线，采用两种方法让多叶光栅生成上述形状：a。