jiaming wrote:
::?::?::?为什么我打开后变成这样了???
aoneboy wrote:
l≈π*sqrt(2*(a*a+b*b))
误差 (125-116)/125=7.2%.太大了![]()
Francis wrote:
心中暗爽![]()
Oak Apple wrote:
椭圆的周长=pi*(长轴+短轴)
yul3000 wrote:
还是不对呀!!!
Oak Apple wrote:
椭圆的周长=pi*(长轴+短轴)
ljr197852 wrote:
因为看不清楚,现传上附件,密码PM给闷人和斑主
Francis wrote:
心中暗爽![]()
地球人 wrote:
建议改成面积不变更有实际意义,因为吸尘器吸嘴要求通气面积不变。
地球人 wrote:
用放样做好像也可以
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