In drip irrigation system, the most effective length has great influence to the distribution and design of the system pipe networks.

滴灌系统中毛管的最大有效铺设长度对滴灌系统管网的布局和设计影响极大。

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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