在农村中人口自然增长率正不断上升。
The natural growth rate of population is revving up in rural areas.
人口自然增长率为10.06‰。
人口自然增长率控制在7‰以内。
The natural population growth rate should stay within 7. In setting these targets, we have taken several major factors into account.
利用最优化原理研究了该系统的积累率和人口自然增长率。
The optimal control theory is used to study the accumulation rate and the population growth rate.
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。
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。
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.
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