“downward mobility”概念、定义、翻译-科学时代

单词	downward mobility
释义	人口学词汇手册 downward mobility 下向流动
随便看	resin adhesive resination resin bead technique resin-bonded graphite brush resin canal resin cavity resin-coated resin coated paper resin-coated paper (RC) resin content resin degradation res indivisibiles resin duct resin entrapping inorganic ion exchanger resin exchange capacity resin finishing agent resin formulation resin for rubber hard increasing resin fouling resiniferous resiniferous tree resinification resin-impregnated paper bushing resin impregnated porous ceramics resin matrix composite

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。