The forces of the main fixed support in water pipe system and items of selection of metal wave grain tube were introduced.

分析了管路系统主固定支架的受力情况，指出了波纹管膨胀节选型的注意事项。

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They are mainly used for Construction projects, the Central Air Conditioning System and widely used for main System of the Central Conditioning, Water Pipe System, HVAC System.

主要定位于为“建筑工程中央空调系统解决方案配套服务”，广泛应用于中央空调的主机系统、水管系统、风管系统。

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A small injection of phages into a water pipe, however, could clean an entire system, with the phages replicating themselves as they consume the biofilm.

然而，往管道内注入少量的噬菌体，就可以清理整个管道系统，因为噬菌体在消耗生物膜的同时可以自我复制。

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One pipe lets water flow into the system.

VOA: special.2009.04.20

Engineers found a cracked pipe letting in standing water which was polluting the system.

BBC: Safe water may return to Broadway on Friday

Engineers found a cracked pipe was letting standing water in and polluting the system.

BBC: Broadway water still unfit 10 days after problems arose

At 8:20 p.m. on the day of the explosion the pressure data suggest there was a constant flow of sea water being pumped into the drill pipe that was displacing the heavier mud system which was the primary pressure control for the well.

WSJ: The Oil Disaster Is About Human, Not System, Failure