“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	first day of lunar month first demographic transition first derivative first derivative test first difference first differential first differential parameter first differentiator first digit law first digit phenomenon first display at Nantong Museum First Display at the Musée Hoangho Paiho first-dose phenomenon first economics adjustment of China first edition First Edition of Serial Book List First Emperor of Qin Dynasty first emptiness First Energy Crisis first entrance time first factor First Fair of Theatrical Troupes from Southwestern Provinces first Fermat point first field free region first field-free region

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。