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Is a research and development, production, trade and service-based economy of foreign trade entities, chemical raw materials to the professional operation of the main company's existing production of AC blowing agent, ferric chloride, hydrated Hydrazine, p-nitrophenol, m-phenylenediamine, phosphorus trichloride, phosphorus oxychloride, 2,4 - diamino benzene sulfonate, sodium dichloro isocyanurate, N-methyl-o-phenylenediamine Second hydrochloride fine chemical products such as the ability, and are obtained ISO9001 international quality system certification.

济南华尔沃进出口贸易有限公司是一家集研发、生产、贸易、服务于一体的外贸型经济实体,以专业经营化工原料为主,公司现有生产AC发泡剂、三氯化铁、水合肼、对硝基苯酚、间苯二胺、三氯化磷、三氯氧磷、2,4—二氨基苯磺酸钠、二氯异氰脲酸钠、N-甲基邻苯二胺二盐酸盐等精细化工产品的能力,并且均以取得ISO9001国际质量体系认证。

Any of a group of micaceous hydrated ''.'silicate'.

蛭石与绿混石有关的一组含云母的水合''。

Any of a group of micaceous hydrated silicate minerals related to the chlorites and used in heat-expanded form as insulation and as a planting medium.

蛭石与绿混石有关的一组含云母的水合硅酸盐矿物质的统称,并以热膨胀形式用作绝缘材料和种植媒介

The effect of nickelous sulfate and hydrazine on thickness and appearance of electroless tin coatings were studies by electrochemical methods.

采用电化学等方法研究了硫酸镍和水合肼对化学镀锡层厚度及表面形貌的影响。

The paper introduced the property of the niobic acid and its usage in esterification, hydration, dehydration, et al.

介绍了铌酸(Nb2O·5nH2O)的性质及其在酯化、水合、脱水等反应中的应用。

Ammonium Copper Quaternary is a novel wood preservative. DDAC, copper sulfate pentahydrate, ammonium hydroxide or ethanolamine were used to synthesize three different kinds of ACQ.

利用二甲基二癸基氯化铵、五水合硫酸铜、氨水或乙醇胺合成3种不同的氨溶烷基铜铵(ACQ,包括A型、B型、D型)。

Amino-monomethoxypoly(ethy1ene glycol)(mPEG-NH2) was synthesized based on the principle of Gabriel synthesis.Monomethoxypoly(ethy1ene glycol) tosylate was prepared at first,and then reaction with potassium salt of phthalimide as nucleophile to produce the monomethoxypoly(ethy1ene glycol)phthalimide derivative.

摘 要:首先合成了单甲氧基聚乙二醇对甲苯磺酸酯,然后根据盖布瑞尔合成法原理,以邻苯二甲酰亚胺钾盐为亲核试剂与mPEG-OTs反应,生成单甲氧基聚乙二醇的邻苯二甲酰亚胺衍生物,mPEG-PI与水合肼反应肼解生成伯胺,合成了一端为氨基的单甲氧基聚乙二醇(mPEG-NH2)。

The decolorization mechanism,which comprises the formation of unstable compunds with hydrolytic aluminium ions and ferric ions and conglomerating with polysilicic acid in the flocculant,was proposed.8figs.,1tab.,12refs.

PSAAF的脱色机理是水合铝、铁离子的凝聚作用和聚硅酸的絮凝而产生的共沉淀。图8,表1,参12。

Ultrafine copper powder s were prepared by direct reduction method with hydrazine hydrate and formaldehyde as composite reductive agent and glucose prereduction method,respectively.

分别采用水合肼-甲醛复合还原剂法以及葡萄糖预还原法制得了微米级的超细铜粉,并利用粉末X射线衍射以及扫描电镜对其进行了表征。

We have presented a practical method for the preparation of propargylic alcohols from terminal alkynes and carbonyl compounds promoted by KOH in the presence of 18-crown-6,and subsequent efficient cyclizations of propargylic alcohols with 2-naphthol catalyzed by InCl_3·4H_2O under the solvent-free ball-milling conditions.Ball milling exhibits its superiority over the reported methods in the preparation of propargylic alcohols and naphthopyran derivatives.

采用机械研磨方法进行了连续的两步固相化学反应的研究:首先,在氢氧化钾和18-冠-6的作用下,端基炔和羰基化合物在机械研磨条件下反应可以高效地生成相应的炔醇化合物;其次,在四水合三氯化铟的催化作用下,生成的炔醇化合物和2-萘酚在机械研磨条件下环加成生成相应的萘并吡喃产物。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。