The total fertility rate is contentious.
对于总生育率,目前仍存有争议。
In 1990 the continent's total fertility rate was over six, compared with two in East Asia.
在1990年时非洲大陆的总和生育率超过6,而东亚为2。
The life expectancy increased with infant mortality rate and total fertility rate decreased.
随着婴儿死亡率及总和生育率的下降而增加。
Replacement rate — The level of total fertility that is compatible with a stationary population.
替换率——用来协调静止人口的总出生率级别。
In 1970 the total fertility rate was 4.45 and the typical family in the world had four or five children.
1970年总生育率为4.45,世界上一般家庭都会有四到五个孩子。
Monte Carlo simulation to establish the total fertility rate is calculated on the focus of this paper.
确立蒙特卡罗模拟方法计算总和生育率为本文的研究重点。
This paper estimates the number of births omitted, the final adjustment of the total fertility rate is 1.68.
本文估算了出生漏报人数,最后调整的总和生育率为1.68。
The total fertility rate had been 5.8 in 1950, he notes, and had declined sharply to 2.3 by 1980, just above replacement level.
他解释说,1950年总生育率为5.8,而1980年巨幅下降至2.3,略微高于人口更替水平的底线。
Europe's total fertility rate has been below the level needed to replace the population for about 34 years, according to a 2005 Rand Corp.study.
根据兰德公司2005年的一份研究,34年来欧洲总生育率已低于替代人口所必需的水平。
By 2030, according to United Nations projections, the total fertility rate in sub-Saharan Africa could fall to three. By 2050 it could be below 2.5.
根据美国相关预测,到2030年撒哈拉以南的非洲地区生育率将下降到3,到2050年将低于2.5。
The total fertility rate of South Korean women (ie, the average number of births they can expect) has dropped to just 1.26 (see chart 1), down from 4.5 in 1970 and 1.5 in 2000.
韩国妇女的生育率(即:他们希望生育子女的数量)从1970年的4.5降至2000年的1.5,现已降至1.26(参见表1)。
First of all papers on the total fertility rate and the content of commonly used method of calculation, combined with the rest of the world's total fertility rate, to compare the two note.
论文首先介绍了总和生育率的内涵和常用的计算方法,并结合世界其他国家的总和生育率,两者加以比较说明。
The results are most striking for the total fertility rate, which dropped from 6.3 children per woman in 1960 to 2.3 in 2000, despite contraception being officially discouraged for some of that time.
最引人注目的结果是它对生育率的影响。虽然在这期间有些时候,官方甚至正式反对避孕,但是生育率仍然迅速下滑。
China's first census in 10, five-year one percent population sampling survey (called on the census), due to China's great population base, the determination of the total fertility rate is never easy.
我国10年一次人口普查,五年一次1%人口抽样调查(人称小普查),由于我国人口基数极大,对于总和生育率的确定绝非易事。
But despite a high fertility rate, the French population continued to age, with over 65 year-olds making up 16.3 percent of the total, compared to 15 percent in 1994.
尽管生育率较高,但法国的老龄化趋势仍在继续,去年65岁以上人口占总人口数量的16.3%,而1994年为15%。
If you take account of late childbearing, you find that 16 European countries, with a total population of 234m, now have fertility rates of 1.8 or more.
如果考虑高龄生育,你会发现,16个欧洲国家(2.34亿人口),现在的出生率达到1.8或者更高。
It is a possible that the study of total soil enzyme activity appraise the level of soil fertility.
用酶活性的总体进行土壤肥力水平评价的可能性。
The results showed that total nitrogen, available nitrogen and organic matter were the main fertility indicators for soil fertility evaluation in the planted forest land on the Loess Plateau.
结果表明,全氮、碱解氮和有机质是黄土丘陵区人工林土壤主要的肥力指标,其含量能更好地反映土壤肥力状况。
Ding Q, Wu J f, li t, et al. The effect of total straw incorporation on rice growth and soil fertility [J]. Acta Agriculturae Universitatis Jiangxiensis, 2014, 36 (1) : 44-49.
丁奇,吴建富,李涛,等。稻草全量还田对双季水稻生长和土壤肥力的影响[J]。江西农业大学学报,2014,36 (1):44 - 49。
Litterfall could evidently improve soil fertility, increase organic matter and total nitrogen, but decrease the total phosphor.
凋落物能明显改善土壤肥力,增加土壤有机质及全氮的含量,但与土壤全磷呈现负相关关系。
Litterfall could evidently improve soil fertility, increase organic matter and total nitrogen, but decrease the total phosphor.
凋落物能明显改善土壤肥力,增加土壤有机质及全氮的含量,但与土壤全磷呈现负相关关系。
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