population fluctuation是什么意思

用法例句

Population fluctuations of both species were erratic in respect to annual occurrence.

探讨了田鼠种群波动周期性、诱发种群波动以及导致波动期间峰值变异的因素。

The population dynamics of Meloidogyne arenaria infecting peanut;

花生根结线虫侵染花生的群体动态

The relationships between soybean cultivars and population dynamics of Heterodera glycines (SCN) were studied.

对不同抗性大豆品种与大豆胞囊线虫的田间群体动态关系进行了系统研究 ,结果表明 :大豆胞囊线虫胞囊的孵化不依赖于寄主根分泌物 ,在侵染的中后期感病品种根内线虫总数是抗性品种的3～10倍 ,抗性品种的抗性主要表现在两个时期 ,即出苗13～16d和出苗27d。

This thesis aims to focus on the study of the black family relationships in Beloved in the light of Lewin\'s group dynamics theory.

本文结合勒温的群体动力心理学理论,对《宠儿》的黑人家庭关系进行探讨,发现小说中的黑人家庭关系对个体产生了负面影响,在很大程度上使得个体行为异化。

Cooperative and inquiry learning model takes the form of group learning in the process of problem inquiry with the help of group dynamics to create favorable emotional atmosphere and learning environment.

协作探究模式以合作学习为操作形式,以探究学习为操作程序,基于群体动力理论营造情感氛围和学习环境,通过任务前师生沟通、介入学习策略、制定个性化学习目标和计划、分编学习小组、设置学习任务、定期反思学习过程和积极评价学习效果等环节为学生营造宽松的英语学习环境,使学生在群体中完善了个性化学习,不仅在个人、社会和心理3个层面上有利于自主学习能力的培养,而且有利于学生的全面发展。

In this paper, a group animation framework based on multiple autonomous agents.

群体动画一直是计算机动画界一个具有挑战性的研究方向 提出了一个基于多自主智能体的群体动画创作框架 :群体中的各角色作为自主智能体 ,能感知环境信息 ,产生意图 ,规划行为 ,最后通过运动系统产生运动来完成行为和实现意图 与传统的角色运动生成机理不同 ,首先采用运动捕获系统建立基本运动库 ,然后通过运动编辑技术对基本运动进行处理以最终得到角色运动 应用本技术 ,动画师只需“拍摄”角色群体的运动就能创作群体动画 ,极大地提高了制作效

In computer group animation creation technology, the artificial life method of computer animation has radically overcome the defects of traditional animation creation technology and greatly improved animation creation efficiency.

在计算机群体动画创作技术中,计算机动画的人工生命方法克服了传统动画创作技术的缺陷,极大地提高了动画创作效率。

In the field of Group Animation, because of lacking reality, the agents being without the ability to control their selves and the high cost of producing animations, the technology based on key frames can not solve the problems today.

在群体动画的创作领域中,由于真实性难以保证,角色没有自主性,动画创作花费大等缺点,基于关键帧的技术已经成为过去时。

THE SPECIES AND GENUS DISTRIBUTION AND POPULATION DYNAMICS OF PLANT PARASITIC NEMATODES IN COTTON FIELDS OF SHANGHAI

上海棉田植物寄生线虫的种属分布和群体动态

Adaptive Behavior and Implicit Learning Mechanism in Dynamic Group Decision Making;

群体动态决策的适应性行为及其内隐学习机制

Dynamic Group Decision Making Method Considering Group Consensus;

考虑群体一致性的动态群体决策方法

Study on the Simulation of the Pedestrian Flow Based on the Multi-agent System;

基于多智能主体的人群流动形态动态模拟研究

Study on Population Dynamics and Colony Diversity of Apis Cerana Cerana in Southern Anhui;

皖南中华蜜蜂种群数量动态及群体多样性研究

Simulation Model of Tillering Dynamics of Rice Community.

水稻群体茎蘖动态的计算机模拟模型

A Peer Dynamic Group Key Agreement Protocol;

一个对等实体的动态群密钥协商协议

The Explore in Colony of Core-competence in Virtual Corporation Mode;

企业动态联盟中群体化核心能力分析

Kinematic Characteristics of Crowd Evacuation Based on Dynamic Decision-Making

基于动态决策的群体疏散动力学特征研究

Pursuit Control of Scalable Swarm System of Mobile Robots in Dynamic Environment

动态环境下可扩展移动机器人群体的围捕控制

Multimedia Data Management System for Dynamic Clustered Streaming System;

动态集群流媒体服务器的媒体数据管理系统

Approximate Dynamic Job-shop Scheduling Optimization for Semiconductor Assembly Based on Swarm Intelligence

半导体封装作业调度的群体智能近似动态优化

Dynamic Structural Analysis on National Traditional Sports Research Groups in China

对我国民族传统体育科研群体的动态结构分析

A DYNAMIC NUMERICAL SIMULATION FOR COLONY GROWTH OF NATURAL HERBAGE AROUND QINGHAI LAKE SHORE

青海环湖地区天然牧草群体生长动态数值模拟

ON ECOLOGICAL DISTRIBUTIONS AND POPULATION DENSITIES OF MOLLUSCA IN LAKE TUNG-HU,WUCHANG

武昌东湖软体动物的生态分布及种群密度

STUDIES ON THE POPULATION DYNAMICS OF LENOLOPA HUIZHOUENSIS IN SCATOPHAGUS ARGUS

金钱鱼体内惠州长宫吸虫种群动态分析

Influence of different planting density on growth and development of canopy dynamics in castor

蓖麻不同种植密度对群体生育动态的影响

Study on Individual-based Model of Anchovy Population Dynamics in the Huanghai Sea and Bohai Sea;

基于个体发育的黄渤海鳀鱼种群动态模型研究