certain solution的用法和样例：
例句
- This paper gives out the analytical solution for the quasilinear system of partial differential equations.
本文给出了这两个拟线性偏微分方程组的定解问题的一个求解方法及解析解表达式。 - This article used the hydromechanics and the noise theory establishes the traffic flow and traffic noise mathematical model and its solution condition.
本文利用流体力学与噪声理论建立了交通流和交通噪声数学模型及其定解条件。
