Parameter identification problems belong to the partial differential equations inverse problems. They are also common in the field of natural science and engineering.
参数识别反问题是偏微分方程反问题的一类，也是在自然科学与工程技术的各领域比较常见的问题。
The research on multi-dimensional conservation laws is one of the most challenging direction in the field of nonlinear partial differential equation, it is very important and very difficult.
高维守恒律方程的研究是非线性偏微分方程的最具有挑战性的方向之一。
Many problems in the field of science and engineering can be attributed to study of the nonlinear partial differential equations.
自然科学和工程技术中的许多问题都可归结为对非线性偏微分方程的研究。
Second order partial differential equations were given. They were solved by one-dimension method and analytical solutions for magnetic field and eddy current were obtained.
列出二阶偏微分方程，采用一维方法求解得到了磁场、涡流的解析表达式。
The governing equation of the temperature field of pulse - magnetron is a nonlinear second order partial differential equation .
磁控管的温度分布是二阶非线性偏微分方程。
One of the field variables is considered as a function of other variables and time, and the fundamental partial differential equation for the function is established.
将一个场变量取作为其余场变量和时间的函数并对这个函数建立基本偏微方程。
One of the field variables is considered as a function of other variables and time, and the fundamental partial differential equation for the function is established.
将一个场变量取作为其余场变量和时间的函数并对这个函数建立基本偏微方程。
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