河道清淤拓宽后，看上去果然比以前宽展多了！

After being widened and cleaned, the river seems much wider then before.

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使用MATLAB编写了数值计算程序，采用二项式拟合的数值方法，总结归纳出了进给速度和宽径比与宽展率之间的解析公式。

Using the binomial fitting method in MATLAB to program numerical calculation program, the analytical formulations between feed speed, width-radius ratio and width spread ratio were deduced.

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