“relative age-specific fertility ratio”概念、定义、翻译-科学时代

单词	relative age-specific fertility ratio
释义	人口学词汇手册 relative age-specific fertility ratio 相对年龄别生育比
随便看	quantum regression theorem quantum resistance standard quantum simulation quantum size effect quantum size effect quantum solid quantum speciation quantum state quantum state quantum state quantum stationary state quantum statistics quantum sterance quantum-theoretic logic quantum theory quantum theory quantum theory quantum theory quantum theory quantum theory of radiation quantum transition quantum transition quantum universe quantum valebat quantum well

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。