“understratum”概念、定义、翻译-科学时代

单词	understratum
释义	矿业工程技术词汇手册 understratum 底部地层；底部岩层
随便看	produce produce broker produce exchange producer producer producer producer producer producer producer producer producer producer producer producer producer producer producer-coloured fibre producer-consumer problem producer gas producer gas producer gas plant producer goods producer goods producer goods

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。