查询词典 hydrogen

Bromoethyl acetate was synthesized by reacting ethylene glycol with an aqueous solution of hydrogen bromide(47%) and acetic acid(1:1:1.3) in the water-carrying agent, which formed an azeotrope with water but not with 2-bromoethyl acetate.

以乙二醇、w=47%和冰醋酸为原料，在带水剂的作用下合成了2-溴乙基乙酸酯。

Angular distribution for scatterings of 3He、4He、6He and 7He with hydrogen bromide molecules are calculated by using close-coupling approach from the anisotropic intermolecular potential of the He-HBr system established by the author. The calculations are performed separately at the collision energies of 60 and 100 meV. The influences of He isotope atoms on angular distribution is discussed in detail.

基于作者构造的He-HBr体系的各向异性势，采用密耦方法计算了碰撞能量分别为60和100 meV时3He、4He、6He和7He被HBr分子散射的角分布，详细讨论了氦同位素对散射角分布的影响。

In an undivided cell, the degradation of methyl red via indirect single and paired electrolysis in the presence of bromide and hydrogen peroxide redox mediators was explored.

本研究是於一未隔离式电解槽中，藉由Br-/Br2与O2/H2O2氧化还原媒子之间接催化分解甲基红之单一与组对电化学反应。

In this paper, initiator is dissolved in 1-bromopropane which is solvent. Then the propene and hydrogen bromide that can be dissolved in 1-bromopropane are inlet in l-bromopropane when initiator is decomposing. The reaction occurs in fluid phase and high-purity 1-bromopropane is synthesized by one step method. In this paper, the material HBr is synthesized with NaBr and sulfuric acid at the presence of hydrobromic acid.

本论文以1-溴丙烷为溶剂，将引发剂溶于其中，加热到引发剂开始分解时再通入丙烯和HBr，使二者溶解于1-溴丙烷中，在液相中进行反应，实现丙烯"一步法"合成高纯1-溴丙烷利用NaBr与硫酸在氢溴酸存在下反应制备HBr气体，以作为合成1-溴丙烷的原料。

Is now an annual production capacity of calcium chloride, bromide, DecaBDE, DBDPE three bromine phenol, Tetrabromobisphenol A, octabromodiphenyl ether, benzyl bromide, diphenyl ether, dibenzo ethane and other chemicals, 5,000 tons of bromine, hydrogen bromide by-product 5000 tons, the product export to Europe and Southeast Asia market, the company owns self import and export rights, and have passed the ISO9001: 2000 certification, is the most full-bromine chemical species, product quality, one of the best high-tech enterprises.

现已形成年产氯化钙，溴素，十溴二苯醚、十溴二苯乙烷、三溴苯酚、四溴双酚A、八溴醚、溴化苄、二苯醚，二苯乙烷等各类溴化学品5000吨，副产溴化氢5000吨，产品出口欧洲和东南亚市场，公司拥有自营进出口权，并已通过ISO9001：2000认证，是国内溴化学品种最全、产品质量最好的高新技术企业之一。

It is usually hard to recycle for its high content of brominated flame retardants, so the key of recycling the wPCB is to debrominate, i.e ., to convert the organic bromides into inorganic ones, e.g ., hydrogen bromide.

实现回收的关键在于脱溴，即将有机溴代物转化为无机溴化物。

Inclusion body was dissolved using 6M guanidine hydrochloride/2M hydrogen chloride and adding cyanogen bromide to solution Expression production was removed N terminal fusion protein AMP-A/B/C/D antibacterial activity was detected.

实验结果发现AMP-A没有抑菌活性；AMP-B/C/D均表现出广谱的抗菌活性，它们的最小抑菌浓度约为9μM，其中AMP-C对革兰氏阴性菌的抑菌效果最强，AMP-D抗菌广谱性较AMP-B/C差。

The ordered mesoporous material MCM-41 was synthesized by a hydrothermal method using fumed silica,sodium hydroxide/tetraethyl ammonium hydroxide/hydrogen chlorideand cetyl trimethl ammonium bromide.

用X射线衍射、氮气吸附-脱附等手段对比分析了合成的3种MCM-41介孔材料的物相、比表面积、孔径、孔体积等，发现酸性介质中合成的介孔材料的孔径最大。

It is also considered as an ideal method to determine the hydrogen chloride in the air.

用离子色谱测定作业场所空气中氯化氢是较为理想的检测方法。

The status of comprehensive utilizaiton of remaining heat of hydrogen chloride synthesis by new technology and process was introduced.

介绍了运用新技术新工艺，对氯化氢生产过程中的余热进行综合利用的情况，不仅降低了环境的热污染，而且取得了一定的经济效益和社会效益。

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。