“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	hydrogen ion hydrogen ion secretion hydrogen isocyanide hydrogen isotope hydrogen isotope effects hydrogen isotope separation hydrogen like atom hydrogen-like atom hydrogen like ion hydrogen-like ion hydrogen line hydrogen liquefaction system utilizing hydrogen refrigeration hydrogen lower heating value hydrogen main sequence hydrogen maser hydrogen-metal ratio hydrogen molecule hydrogen nebula hydrogen nutrient in plant hydrogenolysis hydrogenous atmosphere hydrogen overpotential hydrogen oxidation reaction hydrogen-oxidizing microorganism hydrogen/oxygen absorbing electrode process

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。