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.
另一组重要的石油化学品原料是芳香烃化合物，主要是苯、甲苯和二甲苯，主要由催化重整制得。
Another important group of petrochemical raw materials are the aromatic compounds, principally benzene, toluene and xylenes, which are mainly produced by catalytic reforming.
用胶束电动毛细管色谱法测定了同一井位、不同深度岩屑样品中的苯、甲苯、乙苯和二甲苯化合物。
Benzene, toluene, ethylbenzene, xylene (BTEX) compounds in debris samples which were at different depth and at the same well were determined by micellar electrokinetic capillary chromatography (MECC).
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.
用高压观测池通过可视观测确定了苯、甲苯和对二甲苯等二元系及三元系的临界性质以及甲苯歧化反应混合物临界性质随着反应进程的变化规律；
The critical properties of both binary and ternary mixtures involved in the toluene disproportionation were measured by using a high-pressure view cell with visual observation.
用高压观测池通过可视观测确定了苯、甲苯和对二甲苯等二元系及三元系的临界性质以及甲苯歧化反应混合物临界性质随着反应进程的变化规律；
The critical properties of both binary and ternary mixtures involved in the toluene disproportionation were measured by using a high-pressure view cell with visual observation.
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