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- Chapter 2 is mainly on the optimal harvesting policy for two mutualistic species. 第二章主要是关于互惠双种群的最优收获策略。
- The optimal harvesting policy of the single specie was studied with age distribution when two stages were harvested respectively. From this theory, it was significant to protect our ecology system. 利用最优捕获策略的理论,研究一个具有年龄结构的单种群模型,获得了其幼年种群和成年种群捕获的优化理论。由此来探讨保护生态系统的重要意义。
- optimal harvest policy 最优捕获策略
- Optimal Harvesting Policy And Stability In A Stage Structured Single-Species Growth Model With Cannibalism 具有阶段结构的自食单种群生长模型的稳定性及最有收获策略
- Objective To identify the optimal harvest time for maximal contents of isoflavones in Trifolium Pratense. 目的为确定红车轴草最佳采收期提供依据。
- Objective:To defermine the optimal harvest time for P. notoginseng through studying the changes of saponin contents with growth periods. 目的：研究三七皂苷的积累规律，为确定三七的最佳采收期提供依据。
- Objective To research the optimal harvesting time of Salva miltiorrhiza Bge. 目的探讨丹参最佳采收期。
- He took out a fire insurance policy for his house. 他为自己的房子办理了一份火险保险单。
- After harvest we will have a mass of rice. 秋收后，我们将获得大量稻谷。
- Objective To discuss the optimal harvesting time of Scutellariae baicalensis Georgi. 目的探讨黄芩的最佳采收期,为规范化种植提供依据。
- The research yielded a rich harvest. 该项研究有了丰硕的成果。
- A study on the optimal harvest time of annual forage crops 一年生饲用作物最佳刈割期的研究
- The bad harvest led to severe food shortage. 歉收引起食物严重短缺。
- We have a plenteous harvest this year. 我们今年取得了大丰收。
- The harvest has been safely gathered in. 庄稼已妥善收获完毕。
- I will never swerve from my declared policy on this matter. 我决不背离我已经宣布的在这个问题上的政策。
- Chapter 3 studies a dynamic optimal problem, which combines the optimal harvesting of two mutualistic species with the optimal utilization of productive capital. 第三章研究了将可再生资源的最优收获同生产资本的最佳利用结合起来的动态优化问题。
- Farmers are very busy during (the) harvest. 在收获季节里农民非常忙碌。
- Could I ask for your reaction to this policy? 我能问一下您对这个政策的反应吗？
- Excessive rainfall had made the harvest impossible. 雨量过多，丰收已经不可能了。
