乙炔

The Xuyang base consists of the following factories or workshops: coal mine exploitation and processing, ion-exchange membrane caustic soda, polythene by using calcium carbide ethyne method, thermal power workshops, cement and other assorted industries.

绥阳基地主要由煤炭开采与加工、离子膜烧碱、电石乙炔法生产聚氯乙稀、热电联产动力车间以及水泥和其他配套产业组成。

The graphite and acetylene black are added to a anode material in making Zn-Mn battery, therefore the sample solution prepared appears as feculency and the titration end point of the solution is difficult to judge when active manganese in the battery is determined by iodimetry with starch as a indicator.

在测定锌锰干电池锰粉中活性二氧化锰含量时，由于制备电池时正极锰粉中添加了乙炔黑、石墨等导电材料，使制得的样品溶液显色且混浊，影响用淀粉作为指示剂进行碘量法滴定终点的判断。

A method for the determination of ferrum content in cobalt based alloy dust by Air-C 2 H 2 flame atomic absorption spectrophotometry was set up.

建立了一种用空气-乙炔火焰原子吸收法测定钴基合金喷粉中铁含量的分析方法，探讨了硅对铁测定的干扰机理，对用氯化钙作为硅干扰铁测定的释放剂进行了试验。

The Stille coupling reaction between 8 iodo 9 benzyl 9H purine and RSnBu 3 (R=vinyl,2 thienyl,2 furyl,phenylethynyl and phenyl) was studied using (Ph 3P) 2PdCl 2 as catalyst and DMF as solvent.

采用 (Ph3 P) 2 PdCl2 为催化剂，DMF为溶剂，对 8 碘 9 苄基 9H 嘌呤与有机锡试剂RSnBu3 (R=乙烯基、2 噻吩基、2 呋喃基、苯乙炔基和苯基等)之间的 Stille偶合反应进行了研究，合成出了5种 8位取代的嘌呤衍生物。

Caustic soda,hydrochloric acid,liquid chlorine,PVC resin,sulfuric acid,chlorosulfonic acid,calcium carbon,sulfanilamide,sulfadimidime,dissolved acetylene,oxygen and hypochloric sodium.

烧碱，盐酸，液氯，聚氯乙烯，硫酸，氯磺酸，电石，磺胺，磺胺脒，溶解乙炔，氧气，次氯酸钠。

Novel 2,3-disubstituted indoles as anticancer agent s in total yield of 33%~37% were synthesized from o-iodoaniline and phenylethyne by ten-steps reaction.

以邻碘苯胺和苯乙炔为原料，经10步反应合成了2，3-二取代的新型吲哚抗癌试剂，总收率33%~37%，其结构经1H NMR和MS表征。

But, its insoluble and infusible properties make it difficult to study its chemical structure and to process it in solution or melt.

但是，聚乙炔不熔融、不溶解和对空气不稳定性限制了对其性能的研究。

The results showed polymeric diaryliodonium salts were effective aryl ion transfer reagents. Thirdly, a new type polymer supported hypervalent iodine reagents poly { [4-Hydroxy iodo] styrene} has been developed. It was an effective oxidative reagent, and could be applied to the one pot synthesis of 4-arylthiazoles.

然后，我们以聚苯乙烯羟基对甲苯磺酰氧基碘苯为原料，成功制备了一类新型聚合物高碘试剂—聚苯乙烯负载的炔基碘盐，并研究了其作为炔基转移试剂的有效性：(1)该试剂可对硫、氮、硒等负离子进行亲电炔基化反应，合成炔基亚砜、0，0-二烃基二硫代磷酸炔基酯、1-苯乙炔基苯并噻唑以及炔基硒醚。

From a small workshop to a multinational enterprise, Messer Group has a rich history of more than 100 years of expertise in the industrial gas industry.

从一家小的乙炔发生器车间发展到如今的跨国企业，梅塞尔集团在工业气体行业享有着100多年的专业声誉。

By dehydrochlorination reaction the poly[(2-methoxyl-5-octyloxy)phenylene vinylene] is synthesized and the material"s structure is characterized by nuclear magnetic resonance spectroscopy, infrared absorption spectrum, ultraviolet and visible spectrophotometry. At the meantime, the fluorescence spectrum is measured and the mechanism of fluorescence occurring is analyzed. Thermal Gravimetric Analyzer"s results show that the MO-PPV"s thermal stability is fine. Also the experiment of resolvable property indicates that the MO-PPV can well dissolve in chloroform. Through analyzing the film"s surface by Metaloscope and Atomic Force Microscope, the good filming is found.

通过脱氯缩合法合成了聚(2-甲氧基-5-辛氧基)对苯乙炔，并分别用核磁共振波谱法、红外吸收光谱法、紫外-可见分光光度法等对其进行了结构表征；测量了样品的荧光光谱，分析了荧光产生的机理；热失重仪分析了材料的热稳定性，研究表明MO-PPV材料具有良好的热稳定性；溶解性实验发现材料在氯仿中溶解性较好；金相显微镜和原子力显微镜研究了薄膜的表面形貌，发现该材料的成膜性良好；材料的导电性研究表明，固体材料在掺杂下才可以表现出导电特性，而配成溶液的材料导电性因溶剂的不同而不同，并随溶解时间的长短发生变化。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。