The sex ratio is a biological foundation of population development. Population’s sound development should regard balance of the females and males development as the basic prerequisite.
性别比是人口发展的生物学基础,人口的健康发展要以两性发展的平衡为基本前提。
参考来源 - 九十年代以来我国出生性别比的时间空间变化·2,447,543篇论文数据,部分数据来源于NoteExpress
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