空气标准 meaning in English

air standard
standard air

Mch6 / et breathing air filling stsmen is compact , reliable , economical to use , easy to maintance , and will give years of high quality breathing air meet grade “ en12021 “
Et呼吸空气充填泵结构紧凑,运行可靠,操作简单,维护方便,可常年提供满足国际呼吸空气标准“ en12021 “的高品质呼吸空气
Coltri100l breathing air filling stsmen is compact , reliable , economical to use , easy to maintance , and will give years of high quality breathing air meet grade “ en12021 “
产品简介： coltri100l呼吸空气充填泵结构紧凑,运行可靠,操作简单,维护方便,可常年提供满足国际呼吸空气标准“ en12021 “的高品质呼吸空气