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。

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Consider the distributed parameter system described by the second order partial differential equation of composed type, we discuss its a boundary optimal control problem with quadratic performance.

考虑用二阶复合型偏微分方程所描述的分布参数系统，研究了它的一个使平方性能指标达到最小值的边界最优控制问题。

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In this paper, the second order fully discrete difference method for a partial integro-differential equation is considered.

本文给出了数值求解一类偏积分微分方程的二阶全离散差分格式。

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