1、

New calculating formula has been put forward for reducing ratio of wall thickness of cylinder-type pipe in bending, by using regressive analysis and curve fitting, which has been proved to be with higher calculating accuracy than that of formula being used at present.

采用回归分析和曲线拟合方法,提出圆管无芯弯曲壁厚减薄量新的计算公式。经验证该公式比目前实际采用的变薄量计算公式具有更高的计算精度。

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2、

I found it convenient to use a right angle reducing fitting, followed by a gray threaded pipe, and a gray hose barb that threads onto the gray pipe.

我发现它方便使用直角减少拟合,其次是一个灰色螺纹管,和一个灰色软管烧烤认为线程上的灰色管道。

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