提出了定向射孔水力压裂裂缝的延伸轨迹计算模型和步骤，编制了裂缝延伸的模拟软件。
The models and computation procedures for determining fracture propagation path were provided, and the software for simulation of fracture propagation was developed.
为了建立发动机数学模型和验证CRUISE软件模拟计算的精度，分别做了发动机稳态试验和整车性能试验。
The engine stable experiment and passenger car road test were done in order to build the engine model and testify the accuracy of the simulation by CRUISE.
通过对肘杆系统工作过程的分析并利用多体系统动力学软件（ AD AMS）对模型进行了动力学模拟和优化设计。
Through the analysis of the working process of this linkage system, this paper execute the dynamic simulation and optimization of this model by using multi-body system dynamics software ADAMS.
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