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- alkylation and precipitation 烷基化沉淀
- Introduce the climate and precipitation in Hei Long jiang? 、简介黑龙江省气温及降水情况?
- The cart overturned and precipitated us to the ditch. 车子翻了,我们被摔进了沟里。
- The truck overturned and precipitated us into the ditch. 卡车翻了,我们摔进了沟里。
- The treatment of metal or the separation of metal from ores and ore concentrates by liquid processes, such as leaching, extraction, and precipitation. 水冶金术通过液体过程,象过滤,提炼,沉淀等方法处理金属,从矿石中或矿石浓缩物中分离出金属
- This paper expounds the negative inductive effect of alkyl and explains the order of acidity of some substances. 阐述了烷基的吸电子诱导效应,因此解释了一些物质的酸性变化顺序。
- The sol-gel and precipitation of chemical methods are applied widely. 其中化学法中的溶胶-凝胶法及沉淀法应用最广。
- The bridge broke and precipitated the train into the river below. 这座桥断裂了,结果火车坠入下面的河流中。
- In the IUPAC system, alkyl and aryl substituents and many functional groups are named as prefixes on the parent (for example, iodomethane). 在系统命名法中,烷基、芳基取代基和许多官能团被命名为前缀并放在一个母体的前面(例如:碘甲烷)
- N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization. 以邻氯苯甲酸和对乙氧基苯胺为原料,经过胺的苯基化、二芳胺的环化、N-烷基化、硫代化反应合成了N-丁基-2-乙氧基硫代吖啶酮。
- MMOH is the active site of MMO,its catalysis reaction mechanism mainly includes the activation of alkyl and oxygen molecule. 羟基化酶是其催化活性中心,它的催化机理的研究主要包括烷烃的活化和分子氧的活化这两个方面。
- Oxidation-reduction reactions are important in the solubilization and precipitation of iron and manganese. 氧化还原反应在铁和锰的增溶和沉淀中具有重要作用。
- METHODS Alkylation and acylation were used to synthesize the derivatives and the pharmacological experiments were carried out with the isolated trachea in guinea pig. 方法采用酰化、烷基化方法合成衍生物;药理学实验在豚鼠离体气管模型上进行。
- The three production methods of mesitylene,which include alkylation method,isomerization method, alkylation and isomerization combination method,are introduced in detail. 详细介绍了均三甲苯的三种生产方法(烷基化法、异构化法、异构化和烷基化联合法),评价了这些方法的优缺点。
- Fire retardants of phosphoryl triamide were synthesized by reacting phosphorus oxychloride with each of eight amines, including alkyl and phenyl amines, in a chlorofomi solution. 防火药剂-磷醯三胺化合物系以氯化磷醯分别与八种脂肪族、芳香族有机胺在氯仿溶剂中反应而合成。
- The pernicious microbe can break the colloid balance in beer,so as to the early muddiness and precipitation,the off-smell appear so in beer. 有害微生物会破坏啤酒的胶体平衡,引起啤酒早期混浊和沉淀,产生异味等。
- Glycine, N-[(C10-22-branched and linear alkyl and naphthenyl)sulfonyl] derivs., barium salts;Glycine,N-[(C10-22-branched and linear alkyl and naphthenyl)sulfonyl] derivs. 名称 N-[(C10-22-支链及直链烷基和萘基)磺酰基]甘氨酸衍生物钡盐;
- Comparison of Rain Rates over the Ocean Derived from TRMM Microwave Imager and Precipitation Radar. 微波成象仪和降水雷达得到的海洋降水率的比较。
- The preparation and respective characteristics of polysiloxane with polyether, amino, quaternary ammonium, alkyl and so on functional group are summarized. 阐述了带有聚醚基、氨基、季铵基和烷基等功能基聚硅氧烷的制备方法以及它们各自的特性。
- Relationships between Water Vapor Path and Precipitation over the Tropical Oceans. 热带海洋水气路径和降水关系。