“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	Project Gutenberg project handover Project Hope Project Human Resource Management projectile projectile fragmentation projectile fragmentation type projectile-fragmentation type projectile like fragment projectile-like fragment projectile motion projectile nucleus projectile penetration projectile penetration experiment projectile target combination projectile-target combination Project Information Management project information portal projecting projecting and illuminating system projecting cone projecting cylinder projecting figure projecting line projecting model

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