We investigate optimal policy for a predator - prey system with age - dependent.

研究一类具有年龄结构的捕食 - 食饵种群动力系统的最优收获策略.

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A predator - prey model with time delay is investigated.

研究一类具有时滞的两种群捕食系统.

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A ratio - dependent predator - prey system with time delay and constant rate harvesting is investigated.

研究一类具有时滞和常数收获率的比率型功能性反应的捕食 — 被捕食模型.

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