1) Constant harvest rate
常收获率
2) constant harvesting rate
常数收获率
1.
The kolmogorov system with constant harvesting rate for preys group discussed in this paper is dxdt=x(a_0+a_1x-a_2x 2-a_3y-a_4xy)-H_0,dydt=y(bx 2-d).
研究一类食饵种群具有常数收获率的kolmogorov系统:dx/dt=x(a0 +a1x-a2x2 -a3y-a4xy)-H0,dy/dt=y(bx2 -d)得到了该系统极限环存在与不存在的充分条件。
2.
This paper studies the existence and uniqueness of the limit cycle for a class of preys group with constant harvesting rate,which can be described as follows d x d t=x(a 0+a 1x-a 2x 2-a 3y)-H 0 d y d t=y(bx 2-d)(E)The paper changes the system of (E) to generalized lienard equation with a series of transformation such as d u d t=-φ(v)-F(u) d v d t=-g(u)(H) Then using the theorem 4.
研究了一类食饵种群具有常数收获率系统dxdt =x(a0 +a1x-a2 x2 -a3 y) -H0dydt =y(bx2 -d)(E)的极限环的存在与唯一性。
3) harvesting rate
收获率
1.
Qualitative analysis of Holling Ⅱ model with harvesting rates for preys and predators;
两种群都有收获率的HollingⅡ类模型的定性分析
2.
Asymptotic behavior of the lotka-volterra diffusive system with constant harvesting rate;
具常数收获率的L—V扩散系统的渐近性质
3.
Qualitative Analysis of HollingⅢModel with Harvesting Rates for Preys and Predators
两种群都有收获率的HollingⅢ类模型的定性分析
4) recovery
[英][rɪ'kʌvəri] [美][rɪ'kʌvərɪ]
收获率
1.
By checking residual calf serum contents, safety, potency and harvest recovery of purifying rabies vaccine, the methods mentioned above were screened.
对疫苗的残余牛血清含量、效力、收获率和安全性进行检测 ,优化和建立了精制地鼠肾细胞狂犬病疫苗纯化工
5) efficiency of crop
收获效率
6) harvesting
[英]['hɑ:vist] [美]['hɑrvɪst]
收获率
1.
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。
2.
Based on the existed three continue models, we obtain several classes of dis-crete delayed models with harvesting rate in mathematical biology which seemmore practical than those existed.
本文在已有的连续模型的基础上,得到了更符合实际的几类具有收获率的离散模型。
补充资料：率常
1.遵循常规。 2.经常;通常。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条