The bifurcated steel pipe is usually used int he hydro-engineering and other projects so that its developed surface is key to the design of project.
水利水电工程及其他工程中，经常使用钢岔管，岔管的展开是工程设计的一个重要课题。
The Three Gorge hydro project is a grand systems engineering. It's dispatching and running will bring a series of complex affection to the environment of the whole Yangtze River valley.
三峡水利枢纽是一项规模宏大的系统工程，它的调度运行对整个长江流域的生态环境都将带来一系列复杂的影响。
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