By using ANN and its powerful nonlinear mapping ability and combining production of FEM dynamic analysis, a new way to predicting terrane crack depth of complex fire hole is offered.

以神经网络为基本工具，利用其强大的非线性映射能力，并结合有限元法动力分析成果，为预测在复合射孔条件下岩层裂缝扩展深度提供了一条新的途径。

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This paper elaborates the constraint-based method and gives the realizing approach to the hole-series feature mapping. It's verified by a component instance.

重点阐述孔系约束匹配法及基于约束的孔系特征映射实现方法，并给出实例验证。

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The image force on the dislocation near an elliptical hole is calculated by conformal mapping technique.

本文利用保角变换方法计算了近椭圆孔边位错象力。

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They focused their efforts on NGC4526, mapping out the movements of the molecules at various distances from the galaxy's central black hole.

BBC: Supermassive black hole weighed using new scale