population change meaning in English

人口变动
人口变迁

There is already evidence that such fish population changes have occurred since the mid-1960s .
已经有证据证明，自从六十年代中期，这种鱼群已有变化。
Laser - induced population changes of 5p and 5d levels in rubidium vapor
态的布居数变化
Agricultural growth and population change
农业增长和人口变化
The cluster analysis of the regional disparity of the population changes in china
中国人口转变地区差异的聚类分析
China ' s population change and employment in the new stage of economic development
经济发展新阶段的中国人口变动与就业

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