“chemical concentration”概念、定义、翻译-科学时代

单词	chemical concentration
释义	化工词汇手册 chemical concentration 化学选矿（法）
随便看	trench trench trench trench trench trench trench trench trench-arc-basin system trench backfill trenchbox trench culture trencher trencher trencher trencher trencher plough trenching shot trench knife trench layer trench method trench mortar trench munitions trench planting trench-plough

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。