模型利用径向扩散，辅料络合作用和晶体药物的溶出度来表征多个动力学运输和络合过程。
The model characterizes many dynamic transport and complexation processes that include radial diffusion, excipient complexation and crystalline drug dissolution.
根据飞行控制要求，考虑了影响较大的气动力和气动力矩因素，建立了一个完全表征大机动情况下弹头运动的非线性动力学模型。
According to the demand of flight control system, a nonlinear dynamics model with considerable aerodynamic forces and moments for a large maneuver re entry missile head is built.
在此基础上，建立了以粒度表征的煤粉碎动力学方程，用以反映粒度大小在粉碎过程中的变化特征。
Based on this knowledge, the grinding kinetic equation of coal characterized by particle size is presented. It can reflect the variation of particle size of coal during the grinding process.
土动力学参数是表征土在动力作用下的力学性能的重要指标。
Soil dynamic parameters are important indicators that characterize mechanical property of soils under dynamic action.
主要研究内容和结论如下：1。建立了激光加工多孔端面机械密封的流体动力学分析模型，根据假设，一个孔栏上的液膜压力分布可表征整个密封面上的液膜压力。
The main contents and achievements are summarized as follow:1. A theoretical model has been developed to investigate hydrodynamic effect of mechanical seals with a laser-textured pores seal face.
结论采用非线性最小二乘法拟合释药动力学方程得到的理论值更接近真实值，说明由非线性最小二乘法模型嵌合通用程序得到的动力学方程能准确表征微丸的释药动力学。
CONCLUSION the theoretical values obtained by non-linear least square model fit program is near to the test values. The theoretical equations can describe accurately the release kinetics of pellets.
结论采用非线性最小二乘法拟合释药动力学方程得到的理论值更接近真实值，说明由非线性最小二乘法模型嵌合通用程序得到的动力学方程能准确表征微丸的释药动力学。
CONCLUSION the theoretical values obtained by non-linear least square model fit program is near to the test values. The theoretical equations can describe accurately the release kinetics of pellets.
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