“age-grade distribution”概念、定义、翻译-科学时代

单词	age-grade distribution
释义	教育学词汇手册 age-grade distribution 年龄—学级分布
随便看	trend trend trend trend trend trend analysis trend analysis trend analysis trend analysis trend analysis trend analysis trend analysis trend analysis trend analysis trend analysis method trend analysis method trend chasing Trendelenburg's symptom trend estimation trend extrapolation trend fitting trend growth trend growth rate trend line trend line

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。