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。

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.

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假如我们选择OODB方案，我们必须扩展我们的深度，因此这会产生强迫的培训和对工程团队的时间进度产生不确定性。

If we chose an OODB solution, we'd be a bit out of our depth, so it would force training and uncertainty into the engineering team's schedule.

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但是，“阿尔文”号预计在第二阶段才扩展最大深度，乐观估计是在2015年完成。

But the Alvin won't increase its maximum depth until the second stage, optimistically scheduled for 2015.

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