“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	classified thesaurus Classified Twenty-Four Kinds of Poetry classifier classifiers classifying classifying equipment classifying map classifying mapping Classifying of Shangshi classifying space Classify revenue expenditures and capital expendituresenue expenditure classify the works into different schools and trace back to their origins class imbalance learning class index class interval class invariant class length classless addressing classless inter-domain routing classless inter-domain routing, CIDR class libraries class limits class lower limit class mark class mean

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