“cumulative average gross fertility ratio by age groups”概念、定义、翻译-科学时代

单词	cumulative average gross fertility ratio by age groups
释义	人口学词汇手册 cumulative average gross fertility ratio by age groups 按年龄组统计的累积平均总生育率
随便看	time headway time headway time history time history analysis method time history duplication time-homogeneous Markov chain time hopping spread spectrum time horizon time hull insurance time illusion time inconsistency time-increment time-independent time-independent covariate time-in-grade time in service time insurance time integral time-integrating sampler time-integration sampling time interval time-interval indicator time invariance time-invariant time-invariant channel

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。