STEP是国际标准化组织制定的产品数据表达与交换标准。
STEP is the standard for the representation and exchange of product mo del data established by the ISO.
产品数据表达与交换标准STEP为CIM系统的信息集成提供了重要的技术支持。
The standard for product data representation and exchange STEP can provide sufficient technical support for the information integration of CIM system.
使用现有的产品数据表达与交换标准STEP只能描述CAD模型几何、拓扑和部分运动学信息，对多刚体动力学特征的描述一直是特征模型中的一个空白。
But there are only basic info of geometry, topology and partial kinematics in the CAD model in STEP. The description on feature of multi-rigid-body dynamics is hardly blank.
使用现有的产品数据表达与交换标准STEP只能描述CAD模型几何、拓扑和部分运动学信息，对多刚体动力学特征的描述一直是特征模型中的一个空白。
But there are only basic info of geometry, topology and partial kinematics in the CAD model in STEP. The description on feature of multi-rigid-body dynamics is hardly blank.
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