| 1. | After the decarboxylation process the alkane produced can be degraded or "cracked" =to lower carbon number alkanes .
脱羧基作用后，所形成的烷烃能被降解或“裂解”成低碳数烷烃。 |
| 2. | Petroleum waxes . determination of carbon number distribution of normal paraffin and non - normal paraffin hydrocarbons . gas chromatography
石油蜡正构烷烃和非正构烷烃碳数分布测定法 |
| 3. | The long chain alkyl benzenes in six samples show an even carbon number predominance ranging from c16 to c20 in carbon number
样品中长链烷基苯在c16 - c20 ?围内具有较明显的偶碳优势。 |
| 4. | Additionally , it can be used for determining carbon number distribution of wax , paraffin in petrochemical products , and varions hydrocarbons
利用仪器的系统配置还可以开发出其它适用于石化领域的分析方法，提高了仪器的利用率。 |
| 5. | This paper presents the results of investigating the destructive and oil - displacing capacities of species w3 , g12 and s11 for waxy crude oil from production well chang 74 : reduction of wax content by 7 - 11 % and of interfacial tension by 10 . 7 44 . 0 % ； reduction of high carbon number normal alkanes and enrichment of low carbon number ones ; production of gases ( mainly co2 and n2 ) and acids ; enhancement in oil recovery by 8 . 2 10 . 6 % ( in core experiments )
本文报道这几种菌在油藏条件下的生长情况，与昌74井原油的作用及岩心驱油结果：使原油含蜡量降低7 % 11 % ，使界面张力降低10 . 7 % 44 . 0 % ，使高碳数正构烷烃含量下降，低碳数正构烷烃含量增多，产酸产气，提高岩心采收率8 . 2 % 10 . 6 % 。 |
| 6. | 5 , both melting point ( tm ) and isotropization temperature ( tj ) of all the three series compounds change regularly with the carbon numbers of the end alkoxy group increased . there is a gradual increase in smectic phase length and in the smectic - nemetic transition temperature . at the same time there is a gradual decrease in nemetic phase length
五，三个类型化合物16ia至16id 、 16ila至16lid 、 17ia至17id 、 17ila至17lid 、 18ia至18id和18ila至18lid的熔点和液晶态的清亮点均化合物分子中末端烷氧基增大逐渐降低；近晶相的温度范围和近晶相一向列相转变温度逐渐增大，而向列相的温度范围递减。 |
| 7. | Our study shows that maturity has an effect on the evolution of long chain alkyl benzenes , that is , with the increase of maturity , the carbon number distribution of alkyl benzenes shifts to the lower homologues isomers ; relative abundance of alkyl benzenes isomeride decreases , whereas n - alky benzenes increase
研究表明：长链烷基苯的演化受成熟度的影响，表现为随著成熟度的增加，长链正构烷基苯的碳数分布前移，长链烷基苯异构体相对丰度减小；而正构烷基苯相对丰度有增加的趋势。 |
| 8. | The wax is provided with appropriate isomerization alkane content and reasonable carbon number distribution , and also with wonderful adhesion that it can keep fine protective function for a long time with a wider centigrade arrange , which can be used on manufacturing semi or all - steel radial tire , diagonal tire and other rubber substances , especially being fit for radial tire
该防护蜡具有适宜的异构烷烃含量和合理的碳数分布，并具有极好的附着性，可以在较宽的温度范围内长期保持良好的防护性能，可用于半钢和全钢子午线轮胎、斜交轮胎及其它橡胶制品，尤其适用于子午线轮胎。 |
