For the transformed solution of the thermoelastic and heat conduction equations coupled problem, the analytical representation of the pole residues is obtained.
利用热弹体运动方程和热传导方程耦合问题的变换域解，求解其极点留数的解析表达式。
And so now we have to solve two coupled differential equations, which is a hopeless task.
我们要解决，两个成对的微分方程，这是无法解决的任务。
Theory of fiber optical parametric amplifiers (FOPAs) is introduced and the expression for the gain of FOPAs is deduced from the basic coupled wave equations.
介绍了光纤光学参量放大器的理论，基于耦合波方程推导出光纤光学参量放大器的增益表达式。
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