油烟烟气中直链的羰基化合物的浓度大于支链及环状的羰基化合物的浓度；
The straight-chain compounds were relatively more abundant than the aromatic aldehydes and the branch-chain aldehydes in the oil smoke.
酸性馏分均占总可溶性非烃馏分的47%以上，其中直链脂肪酸占气相色谱可检测总酸性化合物的96%以上。
The acidic fraction constitutes the main proportion of the oxygenated compounds(>47%), among which straight-chain fatty acids account for more than 96%.
利用直链有机胺与金属卤化物在适当的溶剂中进行反应，成功的制备出金属卤化物衍生型钙钛矿化合物。
Metal halide based perovskite materials are successfully prepared with the reaction of organic amine and metal halides in proper solvents.
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