回到重力上，考虑一个三维问题。
I'd like to return to gravity and work on a three-dimensional situation.
三维问题中，抽水竖井的处理是一个难点。
In the three-dimensional question, the treatment drawing water in the shaft is a difficult point.
这在应用应力冻结法解决三维问题时尤为重要。
It is especially important when three-dimensional problem must be solved with frozen stress method.
我有这个问题所有的时间与三维。
目前最有效的解决三维装箱问题的方法。
The most effective solution to three-dimensional packing problem.
解决了三维实体模型到有限元模型的转化以及模型同步更新的问题。
Find a solution to convert solid model into finite element model and update model synchronize.
这是一个复杂的三维传热问题。
This is a complex problem concerning three dimensional heat transfer.
我们把此归结为问题的三维本性。
We can attribute this to the three dimensional nature of the problem.
在三维动画制作过程中，存在很多问题。
In the three-dimensional animation production process, there are many problems.
这就产生三个问题：如何得到直观的任意三维空间模型？
This will generate three questions: how to get any three-dimensional space model directly?
深基坑是一个复杂的三维空间问题。
但当我们将第三维(即纵深)加入到图像中的时候，棘手的问题就出现了。
The tricky part comes when we add that third dimension, depth, to the picture.
从明暗恢复形状(SFS)是计算机视觉中三维形状恢复问题的关键技术之一。
Shape from Shading (SFS) is one of crucial techniques in shape recovery in computer vision.
数值结果表明，AMG＿CG法对求解三维弹性问题有限元方程是十分有效和健壮的。
Numerical results have shown that this AMG_CG method is very efficient and robust.
数值结果表明，AMG＿CG法对求解三维弹性问题有限元方程是十分有效和健壮的。
Numerical results have shown that this AMG_CG method is very efficient and robust.
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