Urban water supply pipe network layout reasonable, good water quality.
城市供水管网布置合理, 水质良好.
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Flush dirt and scale from supply pipe.
从供应管道内冲刷污垢和水垢.
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Two or more valves can be parallel ( when approved ) to serve a large supply pipe main.
两个以上的阀门可以并连连接 ( 如果得到批准 ) 以服务更大的供水主管道.
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The new type of water supply pipe used now is very easy to leak.
当前应用的新型给水管材极易漏水,作者给出了防止漏水的一些措施.
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