air cleaning system meaning in English

空气净化系统
空气净化装置
空气清洁系统

Now the air cleaning system of cleanroom has developed perfect relatively . but compact assembling cleanroom in hospital need further development and perfection . the assembling cleanroom is used for preventing cross infections and transmission of infectious disease
现在洁净室的空气净化系统的发展已经比较完善，但是用在医院中的防止交叉感染或传染性疾病传播的小型装配式洁净室还有待进一步发展与完善。