Based on the physical and mathematical model of spacecraft propulsion system, the application of model based fault diagnosis method to the propulsion system of spacecraft was studied.
在飞船推进系统的物理和数学模型的基础上，研究了基于模型的故障诊断方法在飞船推进系统中的应用。
The dynamic mathematical model of typical parts of generating boiler is set up according to basic physical laws, the modular library of system equipment is produced by Euler method.
依据基本物理定律，建立电站锅炉热力系统典型环节的动态数学模型并形成系统设备模块库，以欧拉法求解。
The first part deals with the fundamental physical assumptions and mathematical model, while the second part describes finite-element approximation and method of calculations.
第一部分提出了基本的物理假定，讨论了数学模型；第二部分是有限元逼近和计算方法的讨论。
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