population decrease的例句大全

An important agricultural region in different regions of the population increase or decrease each period show very different form of exhaust.

一个重农区的不同地区每个时期人口的增减表现出竭然不同的形式。

Since the 1960s, the rapid expansion of the world population and dramatic decrease in cultivated land raised concerns about a probable global food crisis.

自上世纪60年代以来，世界人口急剧增长而耕地面积日益缩减，粮食安全问题已成为世界和平和发展的巨大挑战。

With the increase of population and the decrease of arable land, the four contradictions are sharping, such as resources, population, grain and environment.

但是，人多地少，人口不断增加，耕地日趋减少，所面临的资源、人口、粮食、环境的四大矛盾，向我们提出了严重挑战。

Fermenting the straw to produce feed-protein, can avoid the waste of renewable resources, can remit the problem of the increase of population and the decrease of land and the shortage of feed-protein.

利用微生物发酵农作物秸秆生产饲料蛋白不仅可以避免可再生资源的浪费还能够缓解随人口增加和土地减少形成的人畜争粮、蛋白饲料不足等问题。

To solve the contradiction between the increase of population and the decrease of arable land, the fishery resources in both sea waters and inland waters should be made the best use of, so that there will be enough food available.

为解决我国人口增加与耕地减少的矛盾，如何充分利用我国海洋与内陆水域渔业资源，保障食物的有效供给。

In the screening of HPV infection, we can select the high-risk population so as to decrease the cost of screening. 2.

在HPV感染的的普查当中可以有重点的选择高危人群，这样更加有针对性，从而大大降低普查成本。

The contradiction between the continuous increase of world population and the rapid decrease of farming land and water resources is calling forth a new green revolution marked with modern genetic engineering technology.

世界人口的进一步增加和耕地、水资源不断减少所导致的未来巨大的食物供需矛盾，正引发以基因工程为核心的第二次绿色革命。

The result indicates the inertia weight has little problem dependence, and with the increase of the population its value should decrease properly. The selection of inertia weight has more freedom in the local version of PSO.

结果表明，惯性权重的问题依赖性较小，随着种群的增大，其取值应适当减小，局部版本下，惯性权重的选择具有更大的自由度。

Because of the humans hunting and the destruction of habitants, the population of Ursidae species decrease sharply and all species of Ursidae have been listed as the national endangered. protected species.

由于人为的捕杀和物种栖息地的破坏，熊科动物的数量急剧减少，其物种均被列为国家级濒危保护物种。

There are many unfavorable effects on the sustainable development of social economy because of the aging of population, such as a decline in the proportion of age for labor force in the population; a decrease in the labor resources; the aging of population of labor force;

尽管人口老龄化给社会经济的持续发展带来了劳动年龄人口比重下降，劳动力资源减少，劳动年龄人口老化；

The simulation results show that the population distribution of 2010 will become well-regulated. People will concentrate between the fourth ring and the fifth ring. In the city zone population will decrease except the Dongcheng district.

通过仿真可以看到2010年城市人口的分布更加有规律性，人口集中在四环到五环之间，城区中除东城区人口保持一定的数量，其他三区人口都有所衰减。