“median age”概念、定义、翻译-科学时代

单词	median age
释义	人口学词汇手册 median age 中位年龄，年龄中位数
随便看	economic determinism economic development economic development economic development economic development economic development committee economic development institute economic development zone economic devolution economic dimension economic distance economic disturbances economic divorce economic dualism economic dynamics economic dynamics economic education economic effect economic effect economic efficiency economic efficiency economic efficiency economic efficiency economic efficiency of labour education economic element

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。