查询词典 sodium chloride

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。

On the basis of data of esterification between benzyl chloride and sodium formate with phase-transfer catalyst, three kinetics models were investigated, using the experimental data to validate the model, and the parallel-consecutive-reversible reaction network is determined.

实验测定了氯化苄与甲酸钠相转移催化酯化的动力学数据，对三种可能的动力学模型进行了分析比较，最终确定为平行-连串-可逆反应网络。

During esterification of benzyl chloride and sodium formate, benzyl formate is esterilysis which is a reversible reaction, and the mole ratio of benzyl formate to benzyl alcohol is 3:7 because of the chemical equilibrium.

在氯化苄与甲酸钠的酯化反应同时存在甲酸苄酯的水解反应，并且甲酸苄酯的水解反应是可逆反应，受化学平衡的限制，在实验条件下的甲酸苄酯与苯甲醇平衡的摩尔比大致为3：7。

There are three different nucleophilic reagent respectively reaction with m-dinitrobenzene ramification at distint alkaline term:With the nitrobenzene 、 m-nirtobenzenesulfone sodium salt 、 2.4-dinitro chlorobenzene 、 m-dinitrobenzene for bottom thing, benzyl cyanide、 benzyl chloride、 benzyl chloropyridine、is a nucleophilic reagent reaction for under the different term proceeds a series reaction. At the same time ,discuss about the impact factor to nucleophilicity such as the number of attract electron group、 ability of attract electron and the nucleophilic substitution reaction part.

设计了三类不同的亲核试剂分别与活化芳环在不同的碱性条件下发生反应：以苄基氰、苄基氯化吡啶为亲核试剂，以硝基苯、间二硝基苯、间硝基苯磺酸钠、2，4-二硝基苄基氯为底物进行亲核取代反应；并且对亲核试剂的体积效应、溶剂效应对亲核性影响，底物上吸电子基团的数目、吸电子能力对亲电性的影响，以及亲核取代反应的发生部位受哪些因素影响进行探讨。

This functioned as a selective bridge, permitting the passage of positively charged sodium ions, but not negatively charged chloride ions.

它可以作为有选择的桥梁让带正电的钠离子通过，同时阻止了带负电的氯离子。

Next, Dr LaVan and his colleagues installed a protein called alpha-hemolysin into the protocell membrane. This functioned as a selective bridge, permitting the passage of positively charged sodium ions, but not negatively charged chloride ions.

接下来，拉文和他的同事们在原细胞的细胞膜中加入了一种叫阿尔法溶血素的蛋白质，这样就建立了一个选择性的通道——允许正极的钠离子通过，却阻止负极的氯离子。

Chemical raw materials: include a variety of plating materials and metal surface treatment agent: sodium such as tin, stannous chloride, pyrophosphate Asian tin, copper sulfate, nickel acetate, copper acetate, nickel fluoride, cobalt sulphate, acetic acid cobalt, hydrofluoric acid, anion exchange resin, cation exchange resin, scale inhibitors, cleaning agents, detergents,the phosphating agent, plate washer water, with the exception of Prince agents, rust removal agent, the American Iron and Steel room temperature blackening agent, on behalf of behalf of the black-white (open cylinder agents, supplements), and alloys such as gun color..

二。化工原料：包括各种电镀原料及金属表面处理剂：如锡酸钠、氯化亚锡、焦磷酸亚锡、硫酸铜、醋酸镍、醋酸铜、氟化镍、硫酸钴、醋酸钴、氢氟酸、阴离子交换树脂、阳离子交换树脂、阻垢剂、清灰剂、除垢剂、创辉的磷化剂、洗板水、除腊剂、除油除锈剂、美国的钢铁常温发黑剂、代白代黑、枪色黑合金等。

The drag-reducer used in the present test is cetyltrimethyl ammonium chloride surfactant combining with the same weight concentration sodium salicylate.

本次试验所用的减阻剂为十六烷基三甲基氯化铵表面活性剂，同时配以等质量浓度的水杨酸钠。

In this paper, the bigheads were stored at 0 ℃ and -3 ℃ and coated with 1% sodium alginate solution and 1% calcium chloride solution.

以淡水鱼鳙鱼为研究对象，在0℃和-3℃进行贮藏保鲜，并用1%海藻酸钠+1%氯化钙涂膜保鲜。

Iraq's procurement efforts include equipment that can filter and separate micro-organisms and toxins involved in biological weapons, equipment that can be used to concentrate the agent, growth media that can be used to continue producing anthrax and botulinum toxin, sterilization equipment for laboratories, glass-lined reactors and specialty pumps that can handle corrosive chemical weapons agents and precursors, large amounts of vinyl chloride, a precursor for nerve and blister agents, and other chemicals such as sodium sulfide, an important mustard agent precursor.

伊拉克采购的设备包括可过滤和分离生化武器中微生物和毒素的设备；可用于为炭疽病毒和肉毒菌病毒集中药剂和生长媒体的设备；实验室杀菌设备；可处理腐蚀性化学武器药剂、前体、乙烯基氯化物及其他化学药剂(如钠硫化物，芥子气药剂的前体)的玻璃线纹反应堆和专业水泵。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷