“adult population”的概念、定义、翻译、参考文献-科学参考

单词	adult population
释义	adult population 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	projective closure projective collineation projective compactification projective cone projective configuration projective conic projective connected space projective connection projective coordinate projective coordinates projective coordinate system projective correlation projective correspondence projective cover projective covering projective curvature projective curvature tensor projective curve projective deformation projective design projective determinacy projective determinacy axiom projective determination projective differential geometry projective dimension

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。