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中文摘要：
研究了一类两个物种同时带有饱和项的互惠模型平衡态正解的存在性，首先利用单调解的方法得到了此解的先验估计，然后利用分歧理论和度理论研究了在λ1-c〈a〈λ1和a〉λ1两种情况下非常数平衡解的存在性以及全局分歧解的结构．
英文摘要：
In this paper, the existence of positive solutions of the steady states system are discussed for cooperative model with saturating terms for two species. By using the monotone method, the estimate of the solutions is studied, and by means of the bifurcation theorem and the degree theorem, the existence and the global bifurcation structure of the non - constant steady states solutions for two cases （ λ1 - c〈a〈λ1 and a 〉λ1） are studied.
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