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air quality (aeroqualitas) | |||
mass air | |||
air quality | |||
air quality The degree to which air is polluted; the type and maximum concentration of man-produced pollutants that should be permitted in the atmosphere (空气受污染的程度;允许排入大气中的人造污染物的种类和最大浓度。) | |||
air mass | |||
mass of air | |||
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air-mass |
空 气 质量 : 116 phrases in 22 subjects |