根据实际工程资料建立黄土物理力学数据库，用BP算法建立预测模型。
The database should be created based on practical engineering, and a prediction model, built with the BP neural network.
本文解析解具有广泛的理论意义，根据实际工程具体情况，可进行多种选择。
The analytical solutions obtained in this paper have very broad theoretical values. More choices can be made according to the actual engineering situations.
利用线性代数等知识，根据实际工程需要，建立了地铁牵引供电系统的动态数学模型。
Using the knowledge of linearity algebra, the dynamic mathematical model for metro traction power system is founded as per the actual requirement of engineering.
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