A new idea and a new research direction that study cooperative behavior in town construction combining with system engineering, quantity economy and technology economy are presented.
以系统思想为基础，提出了将系统工程、数量经济和技术经济等与合作对策相结合来研究城镇建设合作行为的新思路及新的研究方向。
Study on rock features is premise and basis for mining project design and research. Selection of rational mechanical parameters of rock is very important for safety and economy of engineering.
岩体特性研究是工程设计和研究的前提和基础，岩体力学参数取值合理与否，直接关系到工程的安全性和经济性。
Thus it is significant in engineering application and latent economy benefit to study the destruction model, compaction mechanism and the design theories and methods of rammed expanded pile.
因此，深入探讨夯扩桩破坏模式，夯扩桩承载机理以及其设计计算理论和方法等具有重要的工程意义及潜在的经济效益。
Thus it is significant in engineering application and latent economy benefit to study the destruction model, compaction mechanism and the design theories and methods of rammed expanded pile.
因此，深入探讨夯扩桩破坏模式，夯扩桩承载机理以及其设计计算理论和方法等具有重要的工程意义及潜在的经济效益。
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