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最高容许浓度 zuìgāo róngxǔ nóngdù
earth.sc. maximum acceptable concentration
space maximal allowable concentration
sport., med. maximum allowable concentration
最高容许浓度矿尘 zuìgāo róngxǔ nóngdù
earth.sc. maximum permissible concentration
最高容许浓度: 9 phrases in 4 subjects
Automobiles1
Earth sciences2
Ecology2
Technology4