ULVAC VSN1501/VSN2401旋片泵模型

注册环境工程师和注册环评师今年都是第一年

本资料为：颜值vs气质关于建筑设计的公众评，内容详实，可供参考。

本文介绍了分体机、多联机、大型中央空调系统的优缺点，比较了各自的投资费用及运行费用

ASHRAE Refrigeration2006ASHRAE Refrigeration2006ASHRAE Refrigeration2006

本资料为：《Earthquake Engineering》，内容详细具体，可供参考。

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This study presents a nonlinear optimization technique (NOT) for conducting the back analyses of geotechnical engineering problems based on the field observations. Additional auxiliary techniques are incorporated to enhance the convergence and stability of the NOT. The developed NOT and additional auxiliary techniques are incorporated into a finite element code and then applied to the back analysis of excavation-induced wall deflection. A number of hypothetical excavation cases with various scenarios of stratigraphy and two quality excavation case histories are used to validate the developed NOT, in which the dominant soil parameters are treated as target parameters. Results show that the wall deflections of all hypothetical and actual excavation cases at each stage can be accurately and efficiently backfigured.