air concentration

空气真菌浓度,The chroma of... ... ) airborne fungi 空气真菌 ) air concentration 空气浓度 ) intake vacuum 进气真空度 ...

掺气特性,aeration,在线英语词典,英文翻... ... ) self-aerated flow 自掺气 ) air concentration 掺气浓度 ) aeration 掺气特性 ...