“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	special envoy special equation special equipment special equipment accident types special equipment for the management special equipment for the production special equipment for the use special equipment full scale burst test special equipment intelligent detection technology special equipment is not open cans inspection technology special equipmentmanufacturing special equipment NDT methods special equipment of administrative license special equipment safety supervision special equipment safety technical regulation special equipment sealing test special equipment trenchless detection technology special examination special examination of statecraft special exhibition special exhibits special fire service special flavor liquor special flow special food safety risk monitoring

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。