查询词典 hydrogen chloride

Polyarylene sulfide is disclosed, of which extract with methylene chloride is in an amount of not more than 0.7 % by weight, a melt viscosity V6 is 20 to 15,000 poises and a content of -SX groups is at least 15 micro moles/g, wherein X represents an alkali metal or a hydrogen atom.

被公开的是聚芳硫醚，其具有二氯甲苯提出物的最为不大于0.7％重量，熔体粘度V6为20～15000泊和－SX基的含量至少为15微摩尔／克，其中X代表碱金属或氢原子。

Besides, n-butyl and sec-butyl tosylate that are difficult for oxidative addition can react with phenylmagnesium bromide to form corresponding cross-coupling products. Primary alkyl halide which contains β-hydrogen and is relatively hard to undergo the reaction , n-butyl chloride for instance, can react with aryl Grignard reagents in the presence of NiB alloy as well.

此外，难以进行氧化加成的对甲苯磺酸正丁酯和对甲苯磺酸仲丁酯可以与苯基溴化镁作用生成相应的交叉偶联产物；反应相对困难的含β-H的伯卤烷，如：正氯丁烷也可以在NiB催化下与芳基格氏试剂发生偶联。

The only reference in the published literature to such a reaction was a note by Clark who reported-without experimental details-that benzaldehyde is converted to benzoyl chloride Indeed, in some cases,t-butyl hypochlorite has been known to effect substitution of hydrogen by chlorine.

在出版文学中仅有的参考这样一反作用was a指出经过克拉克，那苯醛存在在有些情形下的确使转而信仰苯酰氯化物在外面所报告的-实验details-的，t-丁基次氯酸盐已经被知道实现氢的代用在附近氯。

A new organic compound:N,N'-bis(1,10-phenanthroline-2-formacyl)-4,4'-diamino-diphenylmethane was synthesized via oxidation,esterification,substitution,hydrolysis, amidation of 1,10-phenanthroline as the starting material with chemical reagents (hydrogen peroxide,benzoyl chloride,potassium cyanide,sodium hydroxide solution,4,4'-diamino-diphenylmethane).

以邻菲啰啉为起始原料，与双氧水反应合成邻菲啰啉-N-氧化物，接着与苯甲酰氯、氰化钾、NaOH水溶液一一反应合成中间体邻菲啰啉-2-甲酸，再与4，4′-二氨基苯基甲烷进行酰胺化反应合成目标产物。

The instrument can be used for the determination of total sulfur, total chrorine, trace water, bromine number and bromine index, mercaptan and hydrogen sulfide, chloride ion, salt content and chemical oxygen demand.

仪器可广泛用于各种样品中总硫、总氯、微量水分、溴价和溴指数、硫醇和硫化氢、氯离子和盐含量以及化学需氧量等的测定。

Gas membrane permeation and membrane absorption have a lot of advantages, such as little investment, low energy use, convenient use and simple operation, in addition, membrane absorption also has some merits including surprisingly high interfacial area, absence of emulsions, no unloading at low flow rates, no flooding at high flow rates. So gas membrane permeation and membrane absorption are used for separation propylene / hydrogen chloride in this paper.

气体膜渗透法和膜吸收法具有投资少、能耗低、高效、使用方便和操作简单等特点，此外膜吸收法还有传质面积大的优点和没有雾沫夹带、液泛、沟流、鼓泡等现象发生，因此本文采用气体膜渗透法和膜吸收法分离丙烯和氯化氢混合气。

Deep water paper, thermal fax paper, Sham Tseng polyester cardboard, Sham Tseng pressure records paper, electroenciphalogram paper, low voltage electric susceptibility, oscilloscopic using paper, elctroacoustic paper, force are paper, meteorological record sheets and regulator inked ribbons for paper, thermal paper, ECG velcanized, bolgarii fax paper, spark a transcript of the shadow fax paper, pH test strip velcanized, hydrogen sulfide, carbon paper analysis paper, multi-powder-electrogenerated paper, sound paper, instrument records velcanized, potassium chloride punch holes in the paper, paper, electrostatic aunt of paper.

深井抗水记录纸、热感传真纸、深井涤纶卡纸、深井压力记录纸、脑电图纸、低电压电敏纸、示波用记录纸、电声纸、力感记录纸、气象记录纸、校表仪墨带纸、热敏记录纸、心电图原纸、火花传真纸、火花誊影传真纸、pH试纸原纸、硫化氢分析纸、碳素纸、湿式电化学记录纸、声芯纸、仪表记录原纸、氯化钾记录纸、打孔记录纸、静电姨妈纸。

To explore the cytoprotection of hydrogen sulfide (H2S) against cobalt chloride (CoCl2)-induced apoptosis in PC12 cells and the underlying mechanisms.

探讨硫化氢(H2S)对抗二氯化钴(CoCl2)诱导PC12细胞凋亡的作用及其初步机制。

"The acid reacts with most metals, to produce hydrogen and the metal's chloride, and with oxides, hydroxides , and many salts."

盐酸与大多数金属反应产生氢和金属的氯化物，还能与氧化物、氢氧化物及许多盐起反应。

The results showed 3 types of aluminum compound prepared in this paper all had good poison protection effectiveness on such impurities as stannous chloride,lead oxide,sodium hydrogen sulfate,and so on.Moreover,the mechanism of the poison of catalyst was also discussed.

结果表明，合成的3种防中毒剂即防－1、防－2(主要成分为乙酰丙酮合铝)及防－3(主要成分为二乙酰丙酮基异丙氧基铝)对二月桂酸二丁基锡、氯化亚锡、二正丁胺、硫脲、氧化铅及硫酸氢钠等杂质均有较好的防中毒作用；不同防中毒剂对不同杂质的防中毒作用有一定的选择性。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。