中文说明：仿真是对现实系统的某一层次抽象属性的模仿。自然界广泛存在着四种物理场：位移（应力应变）场、电磁场、温度场和流场，对这些自然界的各种现象用最基本的物理、化学和数学等理论来描述，利用模型复现实际系统中发生的本质过程，并通过对系统模型的实验来研究存在的或设计中的系统，就是物理场仿真，又称为物理场模拟。多物理场就是上述物理场中的两个及两个以上同时存在并且互相影响，体现在仿真研究方面就是描述各自场的偏微分方程之间存在某些变量的耦合。
English Description：
Simulation was imitation of reality one level of abstraction of the system properties. Nature widely exists with four species physical field: displacement (stress strain) field, and electromagnetic field, and temperature field and flow field, on these nature of various phenomenon with most basic of physical, and chemical and mathematics, theory to description, using model repetition actual system in the occurred of nature process, and through on system model of experiment to research exists of or design in the of system, is physical field simulation, and called physical field simulation.Multi-physical is above in the field of Physics of two or more coexist and influence each other, reflected in the simulation are the description of each field in the study of partial differential equations with some variables between the coupling.