“permissible concentration”概念、定义、翻译-科学时代

单词	permissible concentration
释义	矿业工程技术词汇手册 permissible concentration 容许浓度
随便看	featherbedding featherbedding feather cockscomb feathered feathered assets feather germ feather headdress feathering feathering feathering feathering hinge feathering hub feathering identification feather money feather money feather out feather palm feather patchwork Feather's empirical formula Feathers Petition Feather's rule featherway featherweight feather-weight antique paper feather-weight paper

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。