stable population

The Error Estimate of Stable Population Rate of Increase and Birth Rate

稳定人口增长率和出生率公式的误差估计

Solution of discrete population model and discussing on stable population

离散人口模型的解和稳定人口的讨论

Study on Stable Population of China from the Perspective of Sustainable Development

从可持续发展的角度看稳定中国的人口规模

A prosperous and stable population is an asset in every country .

兴旺和稳定的人口对每个国家来讲，都是一种财富。

The stable population increasing-rate and the relations between several main parameters of the model are discussed .

并从该模型方程的特征方程出发，讨论了稳定人口增长率及模型的几个主要参数之间的关系.分析表明：中国目前的人口状态与相应的稳定人口状态有较大的差异。

The rule of social and economic development is not easy to grasp , while relatively stable population variable factors show certain regularity .

在诸多影响因素中，经济发展与社会因素变动较为复杂，规律不易掌握，而人口变动相对较为稳定，并呈现出一定的规律性。

Identification and Analysis of F_2 Stable Population Derived from the Cross of Triploid × Diploid in Rice

水稻同源三倍体（149-B）×二倍体F2代稳定群体的验证及分析

Therefore , high yield can be obtained only through promotion of grain weight for properly stable population , healthy individual plant in cultivation .

因此，栽培上应以适度稳穿的群体、壮个体、争促粒重获得高产。

Ratha says developing countries could tap this relatively stable population , which often has a higher income than their home country 's GDP .

Ratha说，发展中国家应该调动这个相对稳定的人口的潜力，他们的收入一般高于祖籍国的GDP。

A high level of genetic diversity was observed within all regions and each region , reflecting a long evolutionary history of a large , stable population .

在所有种群中以及4个区域中均检测到高水平的遗传多样性，反映了这个复杂体具有一个长期稳定的进化历史。

In this stable population , the proportion of deaths from cardiac causes was relatively low , but there are pitfalls in the classification of death .

而是死亡分类有着缺陷，在这个稳定的人群中，由于心脏问题导致死亡的比例相对较低。

Taiwan 's rate of 1.16 births per woman is among the world 's lowest , and barely over half the rate required to maintain a stable population .

台湾平均每位妇女仅生育1.16人，排在世界最后几位，刚刚超过维持人口总数稳定所需生育率的一半。

Ta could colonize on the soil of watermelon plant with the stable population density of 2.8 × 10 7cfu / g · soil .

西瓜根围取样分析表明，Ta能够在根围定殖，并能稳定地达到2.8×107cfu／g土壤的菌落种群。

A single line with obvious fertility transformation was found in the F6 of the cross 8798 / 68 - 83 , when we selected 6th generation with systematic selecting method , a stable population which was called Jian 29s was obtained .

在杂交组合8798/68-83的第六代株系中发现了一个具有明显育性转换的单株，经六个世代的系谱选择后出现稳定的群体&鉴29S；

And there was some small cycle fluctuations in big cycle fluctuations , which showed that such turnover in its canopy layer were cyclical , and Chinese Pine population itself may have some inner adjustment mechanism structurally to distribute resources effectively and form a stable population .

这种波动说明其林冠层的更替是周期循环的。可见油松种群本身在结构上可能存在内调节机制，来有效配置资源形成稳定种群。

When the environment variations are high , the white noise level ( coefficient of variation ) increases to 35 % , the stable fish population becomes spasmodic .

在环境变化较大时，白色噪音水平（变动系数）增加至35%，稳定型种群变为不稳定型。

The results indicated that both tissue and cold digestion methods could obtain more homogeneous and stable cell population , presenting typical fibroblast , and successfully sub-culturing , establishing sheep ear fibroblast lines .

结果表明组织块法和冷消化法培养可获得比较均一、稳定的细胞群，细胞呈典型的成纤维形态，并成功进行传代培养，建立了绵羊耳成纤维细胞系。

As far as I know , it is currently considered to be a stable hybrid population between between nominate heuglini in the west and presumably Vega Gull in the east .

就个人所知，此亚种是西方的灰林银鸥指名亚种和东方的织女银鸥的稳定混血族群。

The analysis of stable 718 rice population derived in early generation

水稻早世代稳定718群体的获得及分析

However , some studies show that species diversity has stable effect on population level of individual component species in varied environment .

但有研究表明：在变动环境中多样性对单个组分物种的种群水平有稳定性作用；

This dissertation deems that , the long-range goal of Shanghai population development should be orientated in stable or stationary population with optimal scale and balanced structure .

本文认为，上海的人口发展应以规模适度、结构均衡的稳定人口或相对静止人口为远期目标。

[ Conclusion ] Blood supply institutes should strengthen the screening of blood donors , establish stable blood donating population so as to ensure blood safety and reduce transfusion-transmitted virus infection .

[结论]采供血机构应加强对献血者的筛选，建立较稳定的献血队伍，保障血液安全，减少输血传播病毒的感染。

For those areas with sound public resources and stable changes of population , we can use the core area solution as a model . Yet for the areas with vulnerable basis of public resources and dramatic changes of population , suburban development mode should be considered .

对于那些公共资源基础雄厚，人口变动稳定的边缘区，可以采用核心区的发展模式，而对于公共资源基础脆弱，人口变动剧烈的边缘区，可以采用近郊区的发展模式。

Theoretical Study of the stable Structure and Charge Population of Ca ~ + - Thymine Complex

胸腺嘧啶与Ca~+复合物的稳定结构及电荷分布

On the other hand , it is important for a strategy to enter the population occupied by other strategy if it can be the evolutionary stable choice by the population in the long run .

另一方面，一个策略是否是种群长期演化选择的结果，也在于其能否在种群演化过程中成功进入。

Its life history strategy is that the basis is vegetative propagation for keeping stable quantity of the population farthest , and the chance is seed propagation at infinitesimal quantity for keeping stable climbing quality of the population frailly . It is a vulnerable species .

其繁衍策略是：以营养繁殖为基础，最大限度地保持种群数量稳定；以极少量的种子繁殖为机会，脆弱地维持种群质量的稳定与提升。