“成年型人口”的概念、定义、翻译、参考文献-科学参考

单词	成年型人口
释义	成年型人口 Encyclopedia 法学成年型人口释 adult population成年型人口 0～14岁人口数量占总人口数量30%～40%，65岁及以上人口数量高于总人口数量4%但低于总人口数量7%的人口年龄结构。
随便看	plane plane advertisement plane air conditioning plane algebraic curve plane algebraic element plane analytic geometry plane and volume hologram plane angle plane angle of a dihedral angle plane angle of dihedral angle plane antenna plane at infinity plane circular restricted three-body problem plane component plane-concave lens plane configuration plane control survey plane-convex lens plane coordinate plane coordinates plane cubic plane curve plane curve location plane cutting plane dihedral angle

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。