对GDCN的建模技术进行分析后，提出了基于仿真分析和元模型技术的领域级约束建模的有效方法。
Then, the modeling method of GDCN was analyzed, and the effective modeling method of the domain constraints based on simulation and Meta modeling was presented.
为了能在基于PC平台的虚拟现实中实现更具真实感的人体运动仿真，该文提出一种改进的约束求解方法，将人体建模为基于约束关节树的骨骼结构。
In order to make human motion simulation more realistic in Virtual Reality on PC platform, this paper introduces an improved method of modeling human body as a tree with constraint joints.
基于有限元分析方法，对运煤敞车的结构简化、单元选取、边界及约束处理等建模技术进行阐述。
The structure simplification of the open boxcar, choosing elements type, and disposing the boundary and restriction of the model are introduced.
针对产品装配设计中存在的装配约束演化问题，提出了基于配合面偶的装配约束建模方法。
Considering the problem of assembly constraints evolution in the process of product assembly design, a method of assembly constraints modeling based on mating surface couples was presented.
针对产品装配设计中存在的装配约束演化问题，提出了基于配合面偶的装配约束建模方法。
Considering the problem of assembly constraints evolution in the process of product assembly design, a method of assembly constraints modeling based on mating surface couples was presented.
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