“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	infantile eczema infantile laryngeal spasm infantile malnutrition infantile palpation infantile tuina infantile uterus infant industry infant industry protection theory infant milk powder infant mortality rate infant nutrition infant perception of prosody infant perception of speech segments infant perceptual attunement infants and childhood feeding Infants at Play by Su Hanchen infant speech perception infant speech production infant's wear infarction infared cloud measurement instrument infared thermometer infauna，endofauna infeasibility infeasible primal-dual interior-point method

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。