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配管怎么减去弯头尺寸_家居日记
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配管怎么减去弯头尺寸

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配管怎么减去弯头尺寸 先计算单个弯头的尺寸，然后用配管总量-(弯头尺寸×数量)。而弯头尺寸的计算方式与角度有关，若是直角弯头，计算方式为半径×cosα，若是锐角


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