Citizen participation in public policy process is not only a new source of legitimacy for executive, but also a new constraint force to the rational exercise of executive power.

公民政策参与公共政策过程不仅能够为行政机关建构新的合法性来源，也可以为行政权力的理性化行使配置新的制约力量。

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On this basis of geometry model and assembly model, this model integrates design parameters of the parts, constraint relationship of the parameters, force situation, mechanics characteristics.

该模型在产品几何模型和装配模型的基础上集成了零部件设计参数、参数之间的约束关系、受力状况、力学性能。

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In this paper, the concept of force constraint of a controlled multibody system is presented.

针对受控多体系统，提出力约束的概念、力学描述及其性质。

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