Simulation study on the movement of particles at Lagrangian coordinates in a cyclone separator was made by phase coupling random trajectory model.

采用相间耦合随机轨道模型，在拉格朗日坐标下对旋风分离器内颗粒的运动进行了模拟研究。

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In this paper, the tangent stiffness matrices and the secant stiffness matrices of space trusses are derived with the energy principle in the Total Lagrangian coordinates.

本文在T．L．坐标下，利用能量原理，同时导出了空间杆元精确的割线刚度矩阵和切线刚度矩阵显式。

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The local equivalence principle and its action on construction of the renormalizable Lagrangian of the quadratic curvature theory of gravity is discussed by using the normal coordinates.

利用法坐标对局部等效原理、以及局部等效原理在构造曲率平方可重整拉氏量中的作用进行了论证。

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