查询词典 alkane

Propylene is one of the important chemical industry material , a half of its produce outputs are used to make chemical industry products in America , then the reaction's product between the rest and isobutane is alkane chemical compound demanded in petroleum .

丙烯是重要的化工原料，美国将生产量的二分之一用于制造化工产品，余下的大部分则与异丁烷反应制造汽油中所需要的烷化物。

On the basis of the characteristics of atomic types in molecule,Hall's electrotopological state indices and Kier's molecule shape index(~mK are calculated for 117 alkane s,cyclanes,aliphatic alcohol,aliphatic ketones.

本文计算了117种烷烃及其衍生物的两类拓扑指数值：其一是基于原子类型特征的电性拓扑状态指数，其二为Kier的分子形状指数。

Latest advances in studies on mechanisms for hydroisomerizaton of n-alkane over bifunctional catalysts supported on zeolites,including monomolecular and bimolecular reaction mechanisms, pore mouth mechanism and key-lock mechanisms,were reviewed.

综述了近年来正构烷烃在分子筛为载体的双功能催化剂上加氢异构化反应机理的研究进展，介绍了单分子机理、双分子机理、孔口机理及锁匙机理，并展望了反应机理在制备新型催化剂领域的应用前景。

Recent-year studies demonstrate that wax consists of not only high-molecular-weight normal alkane, hut also isoalkane, naphthene and olefin; and the origin of wax is not only from high plant, but also lower hydrobiont and lacustrine algae which are as important contributors to the wax.

并认为蜡不仅仅源于高等植物，低等水生生物和湖相藻类对蜡也是重要贡献者。南阳凹陷原油含蜡量高达40%~60%，烃源岩有机质以偏腐殖的混合型为主。

A radioactive decay series; the paraffin alkane series.

放射性蜕变的系列；链烷烃系列。

On the basis of the gas chromatographic analysis of n-alkane fingerprint, the method achieved good reliability with selecting seme characteristic alkanes (i.e.n-C17, n-C18, n-C20, pristane and phytane) as the criteria of identifying. The whole procedure was simple and facile while expending short time.

该鉴别方法基于样品的正构烷烃气相色谱指纹分析，选择既能表征油种固有特性，又受风化影响较小的正十七烷n-C_(17、正十八烷n-C_(18、姥鲛烷、植烷和正二十烷n-C_(20等特征烷烃作为判据，可信度大，而且整个操作流程短，较简便易行。

It has been demonstrated that the methods are successfully used for QSRR studies of quinazoline derivatives, alkypyridine, haloid alkane, ketone, alcohol, sulfur alcohol compounds.

本文成功地用该方法对喹唑啉类、烷基吡啶化合物、卤代烃、醇、羰基化合物和硫醇化合物的结构保留关系进行了探讨。

When sulfuryl chloride is used to chlorinate an alkane, organic peroxide,ROOR is used as an initiator. SO2 is also a product. Write a mechanism for the chlorination.

答：使用硫酰氯化物作为烷烃的氯化剂，过氧化物ROOR被用作引发剂，SO2是一种产物写出氯化作用的机理。

Homogeneous catalytic oxidations of organic substrates such as alkane and alkene catalyzed by m-oxo-bismetalloporphyrins and flexible alkoxyl oxygen linked-bismetalloporphyrins were introduced,and the catalytic mechanism of these two bismetalloporphyrins,along with the possible synergetic catalysis mechanism of binuclear central metal were discussed.

主要介绍了μ-氧代双核金属卟啉和以柔韧烷氧链相连的双核金属卟啉作为仿酶催化剂在均相催化烷烃、烯烃等有机底物氧化方面的研究进展，并对这两类双核金属卟啉的催化机理、金属双核的协同催化作用机理作了论述，最后展望了双核金属卟啉仿酶催化剂的研究前景。

Zirconia loaded with tungsten oxide has been reported to be an efficient solid catalyst at relatively low temperatures in the skeletal isomerization of alkane or benzoylation of toluene, which are usually catalyzed by strong acids.

中文摘要文献上钨锆氧化物可以在低温的反应条件之下，对於烷类的异构化反应扮演有效的固体酸的角色。然而，钨锆氧化物其本身的比表面积通常只有50 m2/g。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。