请输入您要查询的字词:
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
Native Son
native species
Native Title Act 1993
Native Title Amendment Act 1998
Native Treasuries
native word
native XML database systems
nativism of mental development
Nativist Theories of Language Acquisition
Nativity of Mary
nativization of psychology
Nat Nwe
NATO
NATO Bombing of Chinese Embassy in Belgrade
NATO Enlargement Facilitation Act of 1996
natrium
natriuretic factor
natriuretic hormone
natriuretic peptide
natriuretic peptides
natrolite
natron glass
Natron Lake
natrual γ-ray coal ash monitor
natrul coloured cotton
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。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/1/5 15:09:03