In engineering design, the system of flow distribution pipe is very complex.

在工程设计计算中，分配管系统是个十分复杂的过程。

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Graphite cast iron pipes and steel pipes are used for the water supply and distribution pipe network.

输配水管网采用了球墨铸铁管和钢管。

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The system consists of two air blowers (one of them as a common spare), air piping and grid distribution pipe.

这个系统包括两个送风机（其中一个备用）、空气管和氧化空气分布管。

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McDonald's distribution pipe thus needs to carry one-fifth of the items Ameriserve does.

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The HSE investigation focussed on the possibility of a faulty gas distribution system and found the cast iron mains pipe was sunk in sandy-gravelly soil that was classified as "very aggressive" to "moderately corrosive".

BBC: Shrewsbury gas explosion 'no-one's fault' HSE concludes