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A sand ridge field of 22 470 km~2 consists of fine sands and silts originally from the old Changjiang River sediment du......
本文研究具有周期脉冲输入营养基和Beddington-DeAnglis功能反应捕食一食饵系统.通过分析营养基和食饵的子系统,获得系统的边界周期......
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研究一类食饵具有阶段结构及Beddington-DeAngelis 功能反应的食饵-捕食模型的稳定性,利用特征根法,讨论了捕食者灭绝平衡点及食饵和......