均布外压下带肋椭元柱壳的强度计算是一个比较复杂的力学课题。
The strength calculation of ring-stiffened cylindrical shell of oval cross section under uniformly-distributed external pressure is a complicated problem in mechanics.
她对自闭症患者和普通人尸体进行多年解剖，得出这样的结论：两者最主要的区别在于紧凑组成组成大脑皮层的神经元微柱结构。
His conclusion is that the main difference is in the structure of the small columns of nerve cells that are packed together to form the cerebral cortex.
探讨了非线性有限元在预测水平井钻进中的钻柱扭矩及钻头前进方向的应用。
This paper discusses the prediction of the drill stem torque and bit forward direction in an offshore horizontal well by nonlinear FEM.
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