“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	standard multiplicative sheaf standard neutron source standard nil-algebra standard noon standard normal distribution standard notation standard observation Standard Occupational Classification standard of aircraft noise for environment around airport standard of classification Standard of Classification for Drought Disaster standard of dosimetry for environmental radiation standard of dosimetry for radiation processing standard of dosimetry for radiation protection standard of dosimetry for radiodiagnosis standard of dosimetry for radiothrapy standard of fire class standard of gravity gradiometer standard of image for rdiography standard of length standard of living and livelihoods of migrants standard of luminous intensity standard of photography standard of photometric measurement standard of policy instrument evaluation

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。