“old dependency ratio”的概念、定义、翻译、参考文献-科学参考

单词	old dependency ratio
释义	old dependency ratio Encyclopedia 法学年龄释 old dependency ratio老年抚养比人口中老年人数与劳动年龄人数之比，以百分数表示。又称老年抚养系数。
随便看	chirped pulse chirped-pulse amplifying technology chirp filter chirp mass chirp signal chirp spread spectrum chirp transform spectrometer chiru chisel chisel plough Chishan Hu rules Chishan Lake Chishui Dapubu Chishui He Chishui Shi Chishu Manuscript by Cai Xiang Chisimayu Chisong chi-squared distribution chi-squared estimation chi-squared estimator chi-square detection algorithm chi square distribution chi-square distribution chi-squared method

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