A new type of oil - soluble imidazole corrosion delay agent has been Synthesized from naphthene acid and organic amine.
以环烷酸、有机胺为原料合成咪唑啉油溶性缓蚀剂。
It is formulated a rust - proof oil to low noise bearings with naphthene base oil which has good rust - proof property.
用环烷基油调配了一种防锈性能良好的低噪音轴承防锈油。
The content of naphthene, total paraffin, olefin and aromatics in FCC gasoline increased or decreased alternately with the change of space velocity.
环烷烃、总烷烃、烯烃和芳烃的含量随着空速的变化出现相互交叉的现象；
Standard test method for oxygenates and paraffin , olefin , naphthene , aromatic o - pona hydrocarbon types in low - olefin spark ignition engine fuels by gas chromatography.
用气相色谱对低烯烃火花点火引擎燃料芳香碳氢化合物类型，环烃，烯烃，石蜡和氧化物的标准试验方法。
Through practical operation, the authors introduced that adopting swirl separation technology can solve the problem that naphthene oxidation device 'waste lye can not be separated completely.
文章主要介绍通过实际操作，有效地应用旋流分离技术解决环己烷氧化装置废碱液分离不彻底的问题。
The petroleum carboxylic acids(mainly naphthene acids)in the diesel oil of Liaohe oil isolated by the extraction with solution of a1coholic sodium hydroxide, and the efficiency is not lower than 90%;
采用醇碱水溶液萃取方法分离出辽河油直馏柴油馏分中的石油羧酸（主要为环烷酸），采用重量法测出的分离效率不低于90％；
The petroleum carboxylic acids(mainly naphthene acids)in the diesel oil of Liaohe oil isolated by the extraction with solution of a1coholic sodium hydroxide, and the efficiency is not lower than 90%;
采用醇碱水溶液萃取方法分离出辽河油直馏柴油馏分中的石油羧酸（主要为环烷酸），采用重量法测出的分离效率不低于90％；
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