Comparison of productive method, energy consumption, productive cost and environmental protection, for optimal technical decision in the prophase project.
着重对聚氯乙烯的生产方法、能源消耗、生产成本和环境保护进行比较，为项目前期工作优化技术决策。
Comparison of productive method, energy consumption, product quality and productive cost is emphasized, for optimal technical decision in the prophase project.
着重对烧碱的生产方法、能源消耗、产品质量、生产成本进行比较，为项目前期工作优化技术决策。
Theoretical studies of curved girders mainly adopted the methods of balanced method, energy method and variation-based method of virtual work (displacement).
曲线梁的理论研究主要采用平衡法、能量法以及基于变分原理的虚功(位移)方法。
In the paper, some non-destructive methods based on mode theory such as frequency method, energy method and matrix method are introduced.
本文比较详细地介绍了基于模态理论的无损探伤方法，即频率法、能量法、柔度矩阵法等。
In the paper, some non-destructive methods based on mode theory such as frequency method, energy method and matrix method are introduced.
本文比较详细地介绍了基于模态理论的无损探伤方法，即频率法、能量法、柔度矩阵法等。
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