“少子化”的概念、定义、翻译、参考文献-科学参考

单词	少子化
释义	少子化 Encyclopedia 理学人口统计学释 babybust少子化一个社会中随着人口总和生育率下降，少年儿童（0-14岁）占总人口比重降低的现象。一般将一个国家的总和生育率长时间低于维持人口长期稳定发展的更替水平（2.1），界定为少子化。
随便看	nonclassical carbo cation nonclassical carbo-cation nonclassical carbocation nonclassical equation non classical ligand non-classical ligand nonclassical ligand non-classical logic nonclassical logic nonclassical logic calculus nonclassical model nonclassical model theory nonclassical operator theory nonclassical rotational inertia nonclassical set theory nonclassical theoretical model non-clinical pharmacokinetic studies non-closed non-closed continuous group non-closed field non-closed formula non-closed group non-closure non-cluster galaxy non-cluster star

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。