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人口机会窗口
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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。
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Channel catfish culture
channel catfish reovirus disease,Ictalurus punctatus reovirus disease
channel catfish virus disease
channel chart
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channel coding theorem
channel coding theory
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channel command word
channel command word, CCW
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Channel Cooperation
channel definition format
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channel dredging technology in ancient China
channel dynamic model test method
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