benzene-n-heptane-ethanol system 苯
n-butyl benzene 正丁苯
Methyl n-butyl benzene 苯甲酯正丁酯
n-pentyl cyclohexyl benzene 戊基环己基苯
benzene and n-heptane 苯和正庚烷
n-hexyl-benzene 正己基苯
n-Propyl benzene 正丙苯
n-pentyl benzene 戊基苯
The isobaric integral heats of vaporization of benzene-n-heptane binary system were determined and correlated with a vapor-flow calorimeter.
用气体流动量热计测定并关联了苯-正庚烷二元体系的等压积分汽化焓；
Based on the characteristics that in coal bed gas exist rich benzene and poor N-hexane, the authors propose two indicators as"Benzene lndex"(B)and"N-hexane lndex"(H)to distinguish the coal bed gas.
根据煤层气体具有富苯和贫正己烷的特征，提出了“苯指数”（B）和“正己烷指数”（H）两项判别煤层气的指标。
There were not n-hexane, benzene, toluene and xylene, o-xylene, styrene and other organic solvent residue in the purification of apple polyphenol by the headspace gas chromatograph.
再采用顶空气相色谱法检测所得苹果多酚纯化物中正己烷、苯、甲苯、对二甲苯、邻二甲苯、苯乙烯等有机溶剂残留均低于检测限。
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