查询词典 reagents

It shows that vat dyes are able to resist to acid and alkail, which provides the theoretical possibility of spinning viscose with vat dyes as dyed-reagents.

还原染料的&还原-氧化&这一特殊的应用方式，为其应用于粘胶的纺液着色生产，提供了理论的可能性。

White or light gray agate s were dipped in reagents as Fe(NO 3) 3 , HC1 et al ,then was heated up slowly to 210℃ for 3 hours.

对玛瑙的染黄色工艺进行探讨，使用 Fe(NO3) 3等试剂浸泡灰白色玛瑙后，再经过适当的加热处理(2 10℃，3h)，得到了颜色较鲜艳的黄色玛瑙。

Reagents and instruments: valproic acid sodium, retinoic acid, Alcian blue GX, Alizarin red S, fluorogold were provided by Beijing Phetx Co.

体重240一3009健康成熟未孕的Wistar大鼠，分别在确定怀孕的第9天9：oo、16：oo，按实验设计据体重计算剂量后后肢皮下注射丙戊酸钠溶液，浓度20%。

The factors which mostly affect the quality and output of the product including molar proportion of reagents, reaction temperature, alkaline concentration and reaction time are analyzed. After orthogonal experiment, it is concluded that the optimized reaction condition is that acetone and furfural are charged with equal molar quantities at 40 with sodium hydroxide (0.10 mol/L) and the operation time 5 h.

通过对影响亚糠基丙酮质量和收率的主要因素原料配比、反应温度、碱浓度、反应时间等单因素实验，探索出合成亚糠基丙酮的优化反应条件为：原料配比n：n=1.0：1.0、反应温度40℃、氢氧化钠溶液浓度为0.01 mol/L、反应时间5h。

Besides, n-butyl and sec-butyl tosylate that are difficult for oxidative addition can react with phenylmagnesium bromide to form corresponding cross-coupling products. Primary alkyl halide which contains β-hydrogen and is relatively hard to undergo the reaction , n-butyl chloride for instance, can react with aryl Grignard reagents in the presence of NiB alloy as well.

此外，难以进行氧化加成的对甲苯磺酸正丁酯和对甲苯磺酸仲丁酯可以与苯基溴化镁作用生成相应的交叉偶联产物；反应相对困难的含β-H的伯卤烷，如：正氯丁烷也可以在NiB催化下与芳基格氏试剂发生偶联。

At the original launch on basic models of different series, all-wood, Steel-wood, aluminum wood, steel, glass fiber reinforced plastic materials such as laboratory equipment, not only to meet the different requirements of the experimental study courses, adapted to the laboratory work environment special sex (often the spill happened, the corrosive effect of chemical reagents, a heavy equipment load and various accidents happen), but for the vast number of laboratory workers has created a highly efficient, multi-purpose environmental protection of the safety of a laboratory environment.

在原有款式的基础上推出了不同系列，全木、钢木、铝木、全钢、玻璃钢等不同材质的实验室设备，不但满足了不同实验课研究的要求，适应了实验室工作环境的特殊性（经常发生的溢出、化学试剂的腐蚀作用，沉重设备的负载及各种意外事件的发生），而且为广大实验室工作者创造了一个高效、多功能的安全环保的实验室环境。

The domestic demand for man s base rubber bottle plug of package of medicines and chemical reagents would be increased progressively at the speed of every year 20% from 5 in the future to 10, it is that the cube base glue is filled in and be in the state in short supply within nearly 10 years in the future too.

在今后5至10年国内药品包装对丁基橡胶瓶塞的需求将以每年20％的速度递增，也即在今后近10年内丁基胶塞将处于供不应求状态。2005年抗生素粉针剂和输液类丁基胶塞供需缺口将达到100亿只。

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。

Is, one of the GMP qualification enterprise of animal biological product enterprises in China, specialized in the research and production of biological products and diagnostic reagents.

瑞普生物药业有限公司是专业从事生物制品和诊断用药物的生产企业，是目前国内生物制品领域为数不多的GMP达标企业之一。

The products include antioxidants,blowing agents,organic solvents, intermediates for pesticides,drugs and dyestuffs,perfumes,water glass,silicates,molybdenum compounds,graphite series,activated carbon,plasticizers,flame retardant,heat stabilizers,food additives and chemical reagents,etc.

注册商标有&鹿牌&合成樟脑，&桃浦&牌合成樟脑副产物和其他化工产品，&金牛&牌抗氧剂，发泡剂，水合肼，二甲基乙酰胺，二甲基乙醇胺，&海球&牌硅胶系列，&飞铃&牌磷氯，双乙烯酮衍生物，磷酸酯，乙烯利等，&泉字&牌，&水晶&牌各类泡化碱系列，&上胶&牌钼类化合物，石墨类产品系列。

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。