“dependency ratio”的概念、定义、翻译、参考文献-科学参考

单词	dependency ratio
释义	dependency ratio Encyclopedia 法学年龄释 dependency ratio抚养比人口中非劳动年龄人口数与劳动年龄人口数之比。又称抚养系数或负担系数。用百分比表示。
随便看	beamflying-spot scanning beam foil spectroscopy beam-foil spectroscopy beamform beamformer beam forming beamforming beam hopping technique beaming beaming effect beaming in AGN beam injection distributed emission magnetron amplifier beam instability beam intensity beam leakage beamlet beamlet transform beam limiting beam-limiting aperture beam line beam maser beam model be a model of virtue for others beam-of-light transistor beam on elastic foundation

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。