芳烃是环状碳氢化合物，如苯，甲苯和二甲苯。
The aromatics are ringed hydrocarbons, such as benzene, toluene and xylene. Benzene is used to make polystyrenes e.g.
本标准规定了用气相色谱法测定居住区大气中苯、甲苯和二甲苯的浓度。
This regulation prescribes the concentrations of benzene, toluene and dimethylbenzene in air for residential area by gas chromatograph method.
苯、甲苯和二甲苯最后都完全矿化为CO2和H2O，没有生成新的有机物。
Benzene, toluene, dimethylbenzene can be complete mineralized into CO2 and H2O, without producing new organic materials.
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