二钠的

Methanol can be further processed to hundreds of organic products, such as formaldehyde, MTBE, acetic acid, sodium methoxide, chloromethane , methyl formate, formamide, 2-methyl formamide etc., the demand for those will be expand in future:① in 2000, the production of formaldehyde is 2,068,000 tons, along with our country continue reinforce the infrastructure, the consumption of formaldehyde will increase rapidly.

甲醇可深加工的有机化工产品有上百种，如甲醛、 MTBE、醋酸、甲醇钠、氯甲烷、甲酸甲酯、甲酰胺、二甲基甲酰胺等等，预计这方面的需求今后会有适度发展：① 2000年我国甲醛产量达206.8万吨，近年随着我国基本建设的不断加强，甲醛消费量增长迅速。

The device based on the copolymer with 1% molar fraction of Ir complex in the polymer had a peak luminous efficiency of 2.89 cd/A, and the maximal luminance of 1689 cd/m^2 with the configuration of ITO/PEDOT: PSS/emissive layer/Ba/AlPEDOT: poly(3, 4-ethytenedioxythiophene, PSS: poly.

基于铱配合物摩尔分数为1%的聚合物发光器件（器件结构：ITO/PEDOT： PSS/emissive layer/Ba/Al，PEDOT：聚（3， 4-亚乙基二氧噻吩），PSS：聚苯乙酸磺酸钠）在电流密度为40×10^(-3)A/平方公分时，最大电流效率达到2.89cd/A，器件的最大亮度达到1689cd/平方公尺，色坐标为(0.34， 0.59)。

Experimental observation on germicidal efficacy of a powder disinfectant of sodium dichloroiso cyanurate .

了解一种以二氯异氰尿酸钠为主要成分的粉状消毒剂的杀菌效果与稳定性。

The dilational viscoelastic properties of partly hydrolyzed polyacrylamide and alkyl benzene sulfonate in the absence or presence of electrolyte were investigated at the decane water interface by means of longitudinal method and the interfacial tension relaxation method.

采用小幅低频振荡和界面张力弛豫技术，研究了部分水解聚丙烯酰胺(Mo-4000)和阴离子表面活性剂2-丙基-4，5-二庚基苯磺酸钠(377)体系在癸烷/水界面上的扩张黏弹性质，并考察了电解质对体系界面流变性质的影响。

The properties of this surfactant were examined by numbers, including surface tension, foaming power, wetting power, emulsification, detergence, dispersion ability, stability in hard water and thermal stability.

对产物双十二烷基乙氧基二硫酸酯钠进行系统的性能研究，包括表面张力、泡沫力、润湿力、乳化力、去污力、分散力、在硬水中的稳定性和热稳定性等。

The synergic effects between 1,4-Bis(α-alkylpyridinium)butane/hexane Dibromide gemini surfactantsand sodium dodecyl benzoic sulfatehave been studied,the effect of the ratio of GPS/SDBS on the surface tension and critical micellar concentrationof the mixture have been investigated.

研究了溴化1，4/1，6-双-α-烷基吡啶丁烷/己烷双子表面活性剂与普通阴离子表面活性剂十二烷基苯磺酸钠之间的协同效应，考察了二者复配比例对体系表面张力和临界胶束浓度的影响。

The changes of total reducing substances, oxalate extractable Fe, dithionite citrate bicarbonate extractable Fe and phosphorus adsorption in oxic and anoxic layers of two paddy soils during 6 week flooding were examined under laboratory conditions.

在实验室条件下对两种水稻土在为期 6周的淹水过程中，其氧化层和还原层土壤中还原物质总量、草酸盐可提取铁、连二亚硫酸钠-柠檬酸-碳酸氢钠可提取铁和磷吸附的变化进行了研究。

A copolymer emulsion used for air filter paper impregnation was studied, the emulsion was prepared by copolymerization of styrence/bulyl acryl ate and oxidized starch using sodium bisulphate/potassium per sulfate as initiator and sodium doddery sulfate as emulsifier.

摘 要：采用半连续乳液聚合的方法，以亚硫酸氢钠-过硫酸钾为引发剂，十二烷基硫酸钠为乳化剂，合成了一种以氧化淀粉、苯乙烯和丙烯酸丁酯为主要原料的空气滤清器滤纸浸渍乳液。

The missing link, he adds,"is whether the sodium in the E-ring particles really came from Enceladus."

而最后，这些固态的钠元素将重新和土卫二的喷发物融合在一起并继续存在于土星E环中。

Two triphase catalysts of comb-like polyether s supported by silicas were synthesized,and their catalytic behavior in the iodo-substitution,etherization and the addition reaction of dichlorocarbene to styrene were also studied.

以表面经偶联剂修饰的二氧化硅为载体，通过聚(β-氯乙基缩水甘油醚)和醇钠反应，合成了两种梳状聚醚三相转移催化剂，研究了它们在碘代、二氯卡宾对双键加成和混合醚制备反应中的催化活性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。