出生率

战后出生率一度激增。

After the war there was a bulge in the birth rate .

有几个因素已被援引来说明出生率降低的原因。

Several factors have been adduced to explain the fall in the birth rate .

人口出生率最高的欧洲国家是爱尔兰。

The European country with the highest birth rate is Ireland

贫困、文盲与高出生率密切相关。

Poverty and illiteracy go together with high birth rates .

由于出生率下降，产科服务会随之削减。

Maternity services were to be reduced in consequence of falling birth rates .

出生率在逐渐增长。

There has been a gradual increase in the birth rate .

人口普查显示出生率趋于降低。

The Census revealed a decline birth rate .

更让人想不到的是，教育程度低的农村地区的出生率最高,而教育程度高的城市地区的出生率最低。

In a further twist , birth rate is highest in poorly educated rural areas and lowest in highly educated urban areas ．

然而，如果说20世纪的一个典型特征是人们更健康了，那对应21世纪的就是出生率下降。

But while increasing health was a typical feature of the 20th century , declining birth rate could be a defining one of the 21st ．

出生率下降也是许多发展地区的一个主要问题,这可能在几十年内造成灾难性的全球劳动力短缺。

Declining birth rate is a major problem in many developing regions too , which might cause catastrophic global shortages of work force within a few decades ．

在印度北部,出生率高,人口正飞速增长,而在经济发达的南部,出生率正在迅速下降。

In the north of India , the population is booming due to high birth rates , but in the south , where most economic development is taking place , birth rate is falling rapidly ．

此外,约50%的世界人口生活在目前这一数字低于更替水平（即每名妇女生育2.1个）的地区,几乎所有发达国家都在经历次更替以下的出生率。

Furthermore , around 50 % of the world 's population live in regions where the figure is now below the replacement level ( i.e.2.1 births per woman ) and almost all developed nations are experiencing sub-replacement birth rate ．

出生率在下降。

The birthrate is on the decline .

英国国家统计局表示，人口出生率下降被人口老龄化现象夸大。

The Office for National Statistics says falling fertility rates have been exaggerated by an ageing population .

调查显示，日本有数百万中年单身族依然与年迈的父母同住，并在经济上依赖父母。这加剧了日本出生率的下降和老龄化负担。

Millions of middle-aged1 singles in Japan still live with their elderly parents and depend on them financially , research has revealed , contributing to the county 's falling birth rate and ageing population .

由于出生率激增而引起的人口统计学上的急转突变事件（b美国人口统计数据）

The demographic roller coaster caused by the baby boom ( bAmerican Demographics )

本周发表在《自然》（Nature）杂志上的一项新研究表明，在大多数的发达国家中，出生率正在上升。

S.New research published in Nature this week shows that birth rates in the most developed countries are rising again .

两种群相互竞争的具有脉冲出生率的SIS传染病模型

A SIS Epidemic Model of Two Competitive Species with Birth Pulses

人均GDP、总和生育率和出生率是少数民族婴儿死亡率的主要影响因素。

The infant mortality rate is correlative with the average GDP , the total fertility rate and the crude birth rate .

我们以种群的出生率α和b作分歧参数，讨论了在二重固有值处的分歧并得到了存在性及稳定性的结果。

The birth rates of the two species are treated as bifurcation parameters and the existence , uniqueness and stability of the bifurcation solutions from a double eigenvalue are obtained .

有了劳动力人口的快速增长以及人口负担系数（dependencyrate）的减小（出生率较低之故），就不愁没有更多的劳动力、更多的储蓄进而有更多的投资。

A fast-growing working population and a falling dependency rate ( thanks to a lower birth rate ) will ensure more workers , more saving and hence more investment .

在DNA纯度及注射卵的存活率上，两种方法无明显差别；在移植卵的出生率及转基因阳性率上，抽提法优于试剂盒法。

There was no notable difference in DNA purity and viability of injected eggs , but higher birth rate of transplanted eggs and transgenic positive rate were obtained by the extraction method than those obtained by the kit method .

发育胚胎的移植出生率为38.36%（69/181）；冷冻胚胎移植出生后经PCR检测一半小鼠整合阳性。

After these development embryos were transfer to pseudocyesis mouse , 38.36 % ( 69 / 181 ) developed to live young , and a half of these is positive mouse on the PCR test .

第二个模型基于SEIR模型，考虑了网络蠕虫出生率和死亡率的影响。

The second one , based on the SEIR model , considers the birth rate and death rate of Internet worms .

结论：孕中期血清AFP、Free-βhCG2项血清标志物联合检测，作为筛查胎儿先天缺陷可行，能降低先天缺陷患儿出生率5.40‰。

Conclusion : The combination of the serum biochemistry results of AFP and free beta-hCG can be useful markers to detect Down 's syndrome and can decrease 5.40 ‰ of congenital fetal malformation .

结论加强孕期保健，降低VLBWI出生率；

Conclusion The health care in period of pregnancy should be improved to reduce the birth rate of VLBWI ;

随访发现在这些孕妇中其CHD的出生率分别是0.76%，2.65%，7.6%。

A fallow up showed that CHD birth rate was 0.75 % in the first foetus pregnant women , was 2.65 % in the secondary foetus pregnant women and was 7.69 % in pregnant women of CHD family history .

结果：1990年到2000年我国少数民族育龄妇女健康状况普遍提高，育龄妇女死亡率与人均GDP、初婚年龄、出生率、总和生育率等有相关性。

Results : The female health of Chinese minorities has improved universally during 1990-2000 . The female health is correlative with the female mortality , the average GDP , the primary marriage age , the birthrate , the total fertility rate , et al .

“国际数据显示，IVF后双胞胎的出生率可以在不影响妇女受孕率的情况下降低，”Braude说道。

" The international data shows that the incidence of twins after IVF can be reduced without damaging women 's chance of conceiving ," says Braude .

举例而言，在2008年的国庆日，新加坡总理李显龙（LeeHsienLoong）用超过5000字的篇幅谈论新加坡不断下跌的出生率，演讲中甚至还提及了如何给婴儿换尿布。

At the 2008 National Day , for instance , Prime Minister Lee Hsien Loong spent more than 5,000 words discussing Singapore 's falling birthrate . The speech included advice on how to change diapers .