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空气净化设备 kōngqì jìnghuà shèbèi
el. air-cleaning equipment
met. air cleaning unit; air purge facilities
nautic., tech. air purification unit
space air-purifying equipment
tech. air cleaning device; air cleaning equipment; air cleaning plant
空气 净 化设备
: 6 phrases in 2 subjects
Oil / petroleum1
Technology5