The closer a society's population growth rate gets to zero, the more population aging it will be.
一个社会的人口增加率越接近零，其人口便愈老龄化。
The optimal control theory is used to study the accumulation rate and the population growth rate.
利用最优化原理研究了该系统的积累率和人口自然增长率。
It is estimated that in around 2010-2040, population growth rate will be negative in all regions of Europe.
大约在2010- 2040年间，预计欧洲所有地区的人口都将出现负增长。
The relationship between the population growth rate and the food concentration was curvilinear correlation.
其中，轮虫种群增长率与食物浓度间呈曲线相关；
The results showed that temperature affected the population density and population growth rate significantly(P<0.
结果表明：温度对该种轮虫种群密度及种群增长率均有显著影响（P。
Food type and strain affected the population growth rate, body volume, egg volume and relative egg size significantly.
藻类食物的种类和品系对角突臂尾轮虫的种群增长率、个体体积、卵体积和相对卵大小均有显著的影响。
In obvious contrast to Asia, the population growth rate of Europe experienced a constant drop for 50 years, dropping from 18% to 4%.
与亚洲形成鲜明对比的是欧洲，人口增长率连续50年出现下降，从18%降到了4%。
The natural population growth rate should stay within 7. In setting these targets, we have taken several major factors into account.
人口自然增长率控制在7‰以内。
Obviously, Asia is a continent where the population growth rate was the highest in the world in the 20th century, which maintained at 13%.
很显然，20世纪的亚洲是世界上人口增长最迅速的一个洲，增长率保持在13%。
Obviously, , Asia is a continent where the population growth rate was the highest in the world in the 20th century, which maintained at 13%.
很显然，20世纪的亚洲是世界上人口增长最迅速的一个洲，增长率保持在13%。 。
And it is most likely the baby will be born in the Asia-Pacific region - where the population growth rate is higher than anywhere else in the world.
第70亿个小孩最可能出生在亚太地区，那里的人口增长速度比世界其他任何地方都要快。
Though the population growth rate of America slowed down obviously in the 20th century, it was still much higher than that of any European country.
虽然进入20世纪后美国人口增长速度明显放缓，然而也要远远高于任何一个欧洲国家的增长率的。
Though the population growth rate of America slowed down obviously in the 20th century, it was still much higher than that of any European country.
固然进进20世纪后美国人口增长速度明显放缓，然而也要远远高于任何一个欧洲国家的增长率的。
In lively contrast to Asia, the population growth rate of Europe showed a decline in the consecutive 50 years, dropping from 18 percent to 4 percent.
与亚洲形成鲜明对比的是欧洲，人口增长率连续50年出现下降，从18%降到了4%。
Domestic and international experience has shown that increased urbanization is to reduce the population growth rate one of the most effective measures.
国内外经验表明，提高城市化是降低人口增长速度的最有效的措施之一。
Retirement effect — the increase (decrease) of the percentage of the population composed of individuals over 65 years of age induced by a low (high) population growth rate.
退休效应——由低(高)人口增率导致的个人超过65岁人口构成的增(减)的百分比率。
The rapid “postshock” bounce of the population growth rate in the late 17th century was related to the dramatically reduced population size and the coupled increase of food supply per capita.
之后，在17世纪晚期出现的人口增长率“反弹”，其原因在于人口大幅度下降后基数规模显著缩小，从而人均食物资源相对增大。
At the same time, rural population growth rate but faster than the growth rate of urban population, which makes the limited arable land resources, scarcity become increasingly prominent.
与此同时，农村人口的增长速度却又要快于城镇人口增长速度，这就使耕地资源的有限性、稀缺性日益突出。
The same Hispanics, Africans and Asians who are developing at the world's fastest population growth rate have already generated the vast bulk of America's population growth these past two decades.
拉美人、非洲人和亚洲人的人口增长速度目前是世界上最高的，而在过去二十年里，美国新增人口中的大部分也是这些人种。
Over the past century, human use of fresh water has increased at more than double the rate of population growth.
在过去的一个世纪里，人类对淡水的使用以超过人口增长率两倍的速度增长。
A 20-year action plan for cutting the rate of world population growth is expected to win wide approval today in Cairo.
一项旨在降低世界人口增长率的20年行动计划今天在开罗有望获得广泛认可。
The natural growth rate of population is revving up in rural areas.
在农村中人口自然增长率正不断上升。
Well, the high rate of population growth translates into above-average job growth through a couple of channels.
是这样的，较高的人口增长率通过若干个渠道转化成超过平均水平的就业增长。
But when the new power from the use of tools has been exploited, the rate of world population growth fell and became almost stable.
但当工具的使用所产生的新动力被充分利用以后，世界人口增长率下降并且趋于稳定。
But China repeatedly emphasised its commitment to Africa even as growth slumped below the rate of population expansion.
但即使是在经济增长率大幅降至人口增长率以下的时候，中国仍一再强调对非洲的承诺。
Global water use has been growing at more than twice the rate of population growth in the last century.
在上一个世纪，全球用水量的增长速率是人口增长率的两倍以上。
Global water use has been growing at more than twice the rate of population growth in the last century.
在上一个世纪，全球用水量的增长速率是人口增长率的两倍以上。
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