On the base of above study, and with the structural system feature, we put forward economic of structural system analyzing method and model, which is base on value engineering theory.
在以上研究的基础上，并结合结构体系的特点，提出了基于价值工程理论的结构体系经济性分析的方法和模型。
Based on analyzing the characteristics of fuel supply system of launch site, a method of reliability analysis and evaluation of fuel supply system is proposed.
针对航天发射场加注系统特点，提出了可靠性分析和可靠性评定方法，解决了航天发射场可靠性分析和评定的建模问题。
The control method of grinding grade process is designed and the whole grinding system is treated as several control subsystems by analyzing of the model of mill and grader.
在分析球磨机、分级机系统模型基础上，论文给出了磨矿分级过程的控制依据，并将整个磨矿系统分解为若干控制子系统。
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