查询词典 reagent

Some research and analysis on the reaction of 2,4-difluoronitrobenzene and nucleophilic reagent alcohol sodium (methyl alcohol ,ethyl alcohol, propyl alcohol, n-butyl alcohol, t-butyl alcohol, et hl) and the reaction choice of opposite -F in different solvent and conditions have done in this paper.

论文以2，4-二氟硝基苯为主要原料，研究了其与亲核试剂醇钠(甲醇、乙醇、丙醇、正丁醇、叔丁醇等)在不同溶剂中的反应情况，讨论了在几种代表性的溶剂——醇、四氢呋喃、苯、N，N-二甲基甲酰胺中亲核取代反应的情况，研究了温度、反应时间、亲核试剂、溶剂等条件对亲核取代反应的影响。

Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.

着重介绍用过氧化氢和过氧化羧酸作羟基化剂，使苯酚羟基化生成邻苯二酚和对苯二酚的研究开发进展。

The product,after purified with xylene,met the requirement of reagent standards of pyrogallol.The content of pyrogallol was 99.0%.

产品用二甲苯提纯，其质量达到试剂标准，焦性没食子酸含量为99.0％。

In this study, the glasses were prepared from reagent-gade chemicals Mg2, CaCO3, BaCO3 ,Al2O3, and 9wt% ZrO2 which acts as nucleating agent, by quenching method. The glass-ceramics, which are transmitting in the middle IR region and have improved mechanical strength, were made from the parent glass via suitable crystallization heat-treatment.

本研究是以Mg2、CaCO3、 BaCO3 及Al2O3，为主要的成分，再添加9wt ﹪ZrO2作为成核剂，用高温淬冷的方式制备出玻璃，再施以结晶热处理，希望制出结晶化且具有透中红外光的玻璃陶瓷，以提高机械强度。

Western blotting analysis revealed that the recombinant protein could react with rabbit anti-African swine fever virus VP73 polyclonal antibody. Fusion expression of African swine fever virus VP73L is helpful to to prepare ASFVserological diagnostic reagent in next work.

所得结果为进一步研究：分离纯化该重组融合蛋白；确证目标抗原蛋白VP73L免疫原性及其特异性，进而达到建立非洲猪瘟病毒的免疫检测方法奠定了必要的材料与技术基础。

By using on-lined pyrolyzer-chiral MDGC/NPD,it was found that,racemization of S--nicotine reagent was highly synchronous to its thermal degradation process.

采用在线裂解-chiral-MDGC/NPD，发现S-尼古丁试剂的消旋化与热裂解进程具有高度的同步性。

The company's products are: reagent grade.

本公司产品有：试剂级。

The main purpose of this thesis is to analyze and make marketing strategy of fFN reagent.

本文主要目的是分析制定 fFN 检测试剂的营销策略。

Such reagent is now at the stage of being tested in America.

这种试剂是现在正处于第一阶段的测试目前只在美国。

In this paper,the principle of immunoassay is restated in terms of reagent analysis.

本文首先从试剂分析的观点对免及分析的原理进行了论。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。