“老年型人口”的概念、定义、翻译、参考文献-科学参考

单词	老年型人口
释义	老年型人口 Encyclopedia 法学老年型人口释 elderly population老年型人口 0～14岁人口数量占总人口数量30%以下，65岁及以上人口数量高于总人口数量7%的人口年龄结构。
随便看	multistep algorithm multi-step avalanche chamber multistep avalanche chamber multistep decision process multistep differential game multi-step flow of communication theory multistep game multistep method multistep methods multi-step process multistochastic multistore model of memory multi-storey housing multistoried plant community multi-stories dwelling/apartment/house/building multi-stream service multisulfur system multisystem multi-tape Turing machine multitape Turing machine multi-target drug multi target model multi-target model multi-target or multi-hit model multitasking

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。