由于对于不具有性能约束构件的集成，该模型的构件性能属性识别器不用启动运行环境，从而节省了系统开销。
With regard to the integration of component with no performance constraint, the identifier of the model don't activate the initialization environment, to save system expenses.
安全约束和条件是附加到实现构件的。
The security constraints and conditions are attached to the implementation artifacts.
二次应力是由构件的位移约束引起的。
These are developed by the constraint of displacements of a structure.
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