population control是什么意思

网络释义

用法例句

The evaluation of parasitoids on the population control of Liriomyza sativae (Diptera: agromyzidae);

寄生性天敌对美洲斑潜蝇种群控制作用评价

The interference index of population control,IIPC was used to evaluate the control effect of Avermectins,Yasimie and Yasimiejin on peach-aphid.

应用干扰作用控制指数法评价了阿维菌素、蚜虱灭、蚜虱蓟净等杀虫剂对桃蚜种群控制的作用。

From March to May of 2004 an experiment of population control on Gansu zokor ( Myospalax Cansus Lyon) with a sterilant being used to human being was carried out in Liugou of Yuanzhou district of the city of Guyuan.

2004年3月上旬至5月在宁夏回族自治区固原市原州区柳沟生态环境改良示范区进行了人用不育剂对甘肃鼢鼠种群控制的试验,选用的不育剂是北京制药厂1991年生产的甲基炔诺酮速效避孕片。

Probing into Ecological Resettlement and Population Control in Stone Desertification Area of Our Country;

我国石漠化地区生态移民与人口控制的探讨

Consideration about questions of sustainable development and population control;

对可持续发展与人口控制问题的思考

A study of the historical development of China s population control and its trend;

中国人口控制政策的历史变化与改革趋势

A review on population control of the ragweed,Ambrosia artemisiifolia

豚草(Ambrosia artemisiifolia L.)种群控制研究概况

Applications of Impulsive Differential Equations in Microorganism Cultures and Population Controls;

脉冲方程在微生物培养和种群控制中的应用

Field Luring of Synthetic Sex Pheromone of Diamondback Moth, Plutella Xylotessa L.;

小菜蛾性诱剂对田间种群控制效应的研究

Studing on Growth Characteristic and Population Control of Culter Alburnus Basilewsky in Nian Yu Shan Reservoir;

鲇鱼山水库翘嘴鲌生长特性与种群控制研究

Existence of Optimal Harvesting Control for a Class of Time-Varying Population System

时变种群系统最优收获控制的存在性

Two Species Predator-Prey System Harvest Model and Control

两种群捕食-被食系统收获模型及控制

Optimization of Stochastic Population System with Poisson Jumps

带Poisson跳的随机种群系统的最优控制

Control Effect of Biological Agents on the Diamondback Moth,Plutella xylostlla(L.);

生物制剂对小菜蛾自然种群的控制作用

A station that consists of a control unit(cluster controller) and the terminals attached to it.

由控制装置（群集控制器）和与它相连的终端组成的一种站。

My conclusion is that wild cats should be reserved, but its number should be keeped down.

我的意见是野猫应该保留，种群数量要控制。

Controlling of celangulin flo-dust to Callosobruchus chinensis L.

苦皮藤素微粉剂对绿豆象种群的控制作用

THE CONTROL EFFECT OF TEA GEOMETRID NUCLEAR POLYHEDROSIS VIRUS ON HOST POPULATION

茶尺蠖核型多角体病毒对宿主种群的控制作用

Optimal Control in Non-Linear Population Diffusion System with Age-Dependence;

与年龄相关的非线性种群扩散系统的最优控制

Study and Control on Several Population of Pathogenic Microsporidian in the Silkworm, Bombyx Mori (Bombycidae, Lepidoptera);

家蚕病原性微孢子虫若干种群的研究与控制

Research on Optimization of Controllers Using Distribution Population Based Genetic Algorithms;

基于分布种群遗传算法的控制器优化设计研究

Effects of Semio-chemicals of Tropical Plant on Diamondback Moth, Plutella Xylostella L.;

热带植物次生物质对小菜蛾种群的控制作用

The Study of the Population Genetic Structure of Pucrasia Macrolopha on the Partial Sequence of mtDNA Control Region;

从mtDNA控制区部分序列探讨勺鸡种群的遗传结构

The Study of Optimal Control Problem of Exploitation and Management on Biospecies Resource;

生物种群资源开发管理的最优控制问题研究