“population opportunity window”的概念、定义、翻译、参考文献-科学参考

单词	population opportunity window
释义	population opportunity window Encyclopedia 理学人口统计学释 population opportunity window人口机会窗口总人口“中间大，两头小”的结构，使得劳动力供给充足，而且社会负担相对较轻，对社会经济发展十分有利的时期。所谓“中间大”，是指15～64岁的劳动适龄人口规模大；所谓“两头小”，是指0～14岁的青少年人口和65岁及以上的老年人口规模小。
随便看	document deposit document description document distinguish method Document Drafting Office document examination document exchange document filtering document frequency documentics Document, Information & Knowledge document information service document information source document management document microform storage and retrieval system document microphotography technology document object model document object model, DOM document of health supervision document ordering document organization document paste on memorial to the throne in Ming dynasty document preservation education document preservation plan document preservation policy document purchasing through public bidding

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。