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。
The wake geometry feature of helicopter rotor in hovering is visualized by experimental method in this paper and the preceding wake geometry model is updated according to the experimental results.
本文用试验的方法显示了悬停状态旋翼的尾迹几何形状，并以试验结果为依据对现有的尾迹几何模型进行了修正。
Geometry model is regarded as the study object. Representation and variance of multi-state model is studied based on 3d geometry feature.
以几何模型为研究对象，基于三维特征研究多态模型的表示和变迁机理。
The important feature of the model is that the complex workpiece geometry has been considered which makes this model more practical.
该模型考虑了复杂的工件形状和不同的铣刀进给轨迹。
The important feature of the model is that the complex workpiece geometry has been considered which makes this model more practical.
该模型考虑了复杂的工件形状和不同的铣刀进给轨迹。
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