And the key of monotone method is constructing appropriate upper and lower solutions.
单调方法的关键是构造合适的上、下解。
参考来源 - 反应扩散方程的行波解及波速估计·2,447,543篇论文数据，部分数据来源于NoteExpress
利用单调方法讨论了一类含时滞及周期系数的反应扩散系统的竞争-竞争-互惠模型。
By using the monotone method, a periodic reaction diffusion system of a competitor-com - petitor-mutualist is investigated.
构造了一对合适的上下解，利用单调迭代方法证明了模型的两个平衡点之间行波解的存在性，进一步丰富了单调方法的内容。
This paper uses the monotone iterative technique to investigate the existence of the solutions of a class of boundary value problem for third-order differential equation.
所以，在口语到达一定水平以后，就要钻研如何避免一种单调的表达方法，如何使用更 加贴切的表达方法。
Therefore, arrives after thecertain level in the spoken language, how has to study diligentlyavoids one monotonous expression method, how uses the more appropriateexpression method.
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