“空气洁净度等级”的概念、定义、翻译、参考文献-科学参考

单词	空气洁净度等级
释义	空气洁净度等级 Encyclopedia 工学食品工厂设计释 classification of air cleanliness空气洁净度等级单位体积洁净空间的空气中，按关注粒径的粒子最大浓度限值进行划分的等级标准。
随便看	universal unfolding universal uniformity universal validity universal variety universal woodworking machine universal λ-ring universe universe abundance universe age universe, cosmos universe evolution universe mean universe of a structure universe of discourse universe's age universe's age, cosmic age Universidad de El Salvador university and college campuses University Benchmark Association university charter University College London: Department of Information Studies (UK) University College London Libraries university council university culture university extension movement

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。