By the comparison of technology and economy, an analysis and a summary of superiority, economy, and easy construction of CFST are conducted.
通过技术经济比较，对钢管混凝土结构的优越性、经济性、施工方便性等优点进行了分析和总结。
Third, it explains the external environment of the enterprise based on economy, policy and technology environments. It carries out industrial analysis and makes division of strategic groups.
第三，从经济环境、政策环境、技术环境三方面阐述了企业的外部环境，并进行了行业分析，划分了战略集团。
This article not only theoretically analysis the technology reliability and economy rationality of this technology, but also verifies it by experiment.
本文从技术可靠性和经济合理性二个方面，进行理论分析和实际测试验证。
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