Ratio of population的意思|示意

The relationship of production of population dry matter was strong with the leaf characters such as ratio of leaf weight with leaf area, chlorophyll content and population photosynthetic rate.

比叶重、叶绿素含量和群体光合速率等叶片性状与群体干物质生产密切相关。

Yicheng, a county of 320,000 residents, silently has been carrying out a two-child policy for 26 years and it has a lower-than-average population growth and a more-balanced gender ratio.

翼城，一个有着32万居民的小县城，已经悄悄地实行了26年的二胎政策，并且它有一个低于平均水平的人口自然增长率和一个更为平衡的性比比例。

The ratio is a measure of the number of young people who are fed by the working population. This is affected by factors like birth rate.

比率反映就业人口需要抚养的小童和幼儿，一般受出生率影响。

Dependency ratio Proportion of children and old people in a population in comparison with everyone else.

抚养率指在总人口中，儿童和老人与其他人口的比率。

One-third of the world's population lives in "water-stressed" countries, defined as a country’s ratio of water consumption to water availability.

世界上三分之一的人口生活在“用水紧张”的国家，“用水紧张”的程度用耗水量与水资源可利用量的比值来衡量。

Female infanticide is common and the ratio of males to females in the population can be a frightening 10:7 in some areas.

在有些地区溺杀女婴是平常的事，男女人口比例也可怕地只有10：7。