A reasonable excavation procedure and contour blasting method is one of the key techniques for construction of deep underground powerhouse.
合理的开挖程序和轮廓爆破方式是深埋地下厂房施工中的关键技术之一。
The functions of information system were programmed, the key techniques used in the construction of the system were discussed, and finally, the detail methods for system developing are also discussed.
对信息系统建设的关键技术进行了讨论。最后，结合信息系统开发方法学对系统开发的具体方法进行了讨论。
The pavement structure and material are the key techniques for desert highway construction.
路面结构与材料是修筑沙漠公路的关键。
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