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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。
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root-mean-square end-to-end distance
root mean square error
root-mean-square error
root-mean-square error 9 rms error
root-mean-square fluctuation of deflection angle of suspended coil galvanometer
root mean square of error
root mean square radius
root mean square radius of gyration
root-mean-square radius of gyration
root mean square speed
root-mean square speed
root-mean-square speed
root-mean-square speed, rms speed
root mean square value
root-mean-square value
root mean square velocity
root morphyology
root node
root nodule
root nodule bacteria
root nodule organogenesis
root of a building
root of a cardinal number
root of a chamber complex
root of a derivative
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