建立汽车发动机这样非线性系统的数学模型非常困难，人工神经网络理论为非线性系统的辨识提供了新的方法。
Mathematical model establishment in nonlinear system such as automobile engine is still very hard. Artificial neural network theory brings to us a new method in nonlinear system identification.
以虚拟样机技术为设计理念，通过UG软件，建立汽车发动机盖锁的虚拟样机模型。
Taking the virtual prototype technology as the designing idea, the virtual prototype model for automobile engine hood lock was established by means of UG software.
使用基于动态显式算法的商业软件LS - DYNA建立了某汽车发动机隔热罩拉延成形的有限元模型。
A finite element model describing the drawing process of the heat-shield panel of automobile engine is established by using the commercial dynamic explicit code LS-DYNA.
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