“age structure of population”的概念、定义、翻译、参考文献-科学参考

单词	age structure of population
释义	age structure of population Encyclopedia 理学种群年龄结构释 age structure of population种群年龄结构种群中各年龄阶段的个体在种群中所占的比例。又称种群年龄分布、种群年龄组成。
随便看	circumstellar dust shell circumstellar envelope circumstellar gas circumstellar grain circumstellar grains, stardust circumstellar line circumstellar maser circumstellar material circumstellar matter circumstellar nebula circumstellar shell circumsystem material circumtangential triangle circumterrestrial circumterrestrial flight circumterrestrial orbit circumterrestrial satellite circumterrestrial space circumterrestrial trajectory circumventricular organ circumvolant circumvolve circumzenithal circumzenithal arc circunglibal

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