“mass concentration”概念、定义、翻译-科学时代

单词	mass concentration
释义	环境科学与工程词汇手册 mass concentration 质量浓度
随便看	yard space yard stain yardstick yardstick yardstick yard stick yardstick yardstick yardstick yardstick competition yardstick standard cost yard trailer yard truck yard--yard (yd.) yard (yd.) Yarkand Yarkovsky effect Yarmouth Yarmouth Interglacial Stage yarmulke yarn yarn yarn yarn yarn construction

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。