These gate valves are ideal for closing and opening the flow in water pipelines.

本闸阀暗转在介质为水的管路上，作为启闭设备使用。

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Other shortfalls include water pipelines, mass-transit systems, hospitals and low-income housing.

其他的不足还包括水管铺设、公交系统、医疗设施和低收入保障房等。

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The under water pipelines were laid into the stable bed by ditch burying of full cross-sectional area to ensure the safety of underwater pipelines.

水下穿越管线采用全断面沟埋敷设于河床稳定层内，确保了穿越管段的安全。

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Such an approach can help use less water, eliminating the needs for capital-heavy investment such as desalination projects or long water pipelines.

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Such data can also help prevent leaks in water pipelines.

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Why not ditch desalination altogether for investment in Great Lakes-to-Southwest water transport pipelines parallel to the Keystone XL or other proposed corridors, repair of leaky existing infrastructure, or cargo shipping?

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