A rub impact model of nonlinear rotor system is built.
针对一类非线性转子系统，建立了碰摩模型。
The mechanism of cutting brittle materials was studied, the impact model was established and the stress of impacting area was analyzed.
对脆性材料的切割机制进行研究，建立切割冲蚀模型，分析受冲击区的应力。
While in the high volume case, an arrival & departure chart of parking vehicles is consulted to formulate a corresponding delay impact model.
流量较大情况下，结合车辆到达-离开图示，建立了相应的延误影响模型。
Then a complete vehicle side impact model is developed by adding finite element models for door trim, ES-2 dummy and moving deformable barrier on converted model.
在转换模型的基础上，通过加入车门内饰、假人和移动障碍壁模型，建立了完整的整车侧面碰撞模型。
One leading idea is that gravitational tidal forces reshaped the moon's crust and made it lopsided. But the new theory builds on the "giant impact" model that explains the moon's creation.
一种主流看法认为是重力潮汐作用改变了月球的外壳，并使其向一侧倾斜，但该新理论是以解释月球成因的“大碰撞”模型为基础的。
One leading idea is that gravitational tidal forces reshaped the moon's crust and made it lopsided. But the new theory builds on the "giant impact" model that explains the moon's creation.
一种主流看法认为是重力潮汐作用改变了月球的外壳，并使其向一侧倾斜，但该新理论是以解释月球成因的“大碰撞”模型为基础的。
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