Underground pipe networks and other urban infrastructure were improved.

推进地下管网等城市基础设施建设。

This kind of valve is suitable for water conservancy , underground pipe engineering , etc.

此阀门适用于水利工程、地下管道工程等领域。

When you use the wiring laying underground pipe, wire in the pipes should be joint and kink.

布线时要用暗管敷设，导线在管内不应有接头和扭结。

Horizontal Directional Drilling technology is widely used in urban underground pipe laying engineering.

在非开挖工程中，水平定向钻进技术广泛应用于城市地下管线铺设工程。

The expert system, SPIPE, can be practically applied for seismic evaluation of underground pipe network.

地下管网抗震评定专家系统SPIPE是面向实用的，可用它来对地下管网进行抗震评定。