Electron beam-irradiation method was applied to prepare nano-sized nickel powders in aqueous system at room temperature and ambient pressure using polyvinyl alcohol ( PVA) and dodecyl trimethyl amine bromide ( DTAB) as the surfactants respectively.

To examine a variety of solvents and surfactants, and found the effect of dodecyl trimethyl ammonium bromide and solvent xylene was better, that can be reserved for the following subsequences.

再考察各种溶剂及表面活性剂，发现从十二烷基三甲基溴化铵及溶剂二甲苯的效果较好，可以留作后续配合使用。

Adding proper amount of electrolytic additive such as OP-10, TX-10 and dodecyl trimethyl ammonium bromide can obviously and suppress the growth of zinc dendrite.

在电解液中添加适量的OP-10、TX-10以及十二烷基三甲基溴化铵添加剂可以明显改善锌沉积形态，抑制锌枝晶生长。

Research on Synthesis of N-Dodecyl Bromide with Solid Superacid Catalyst

固体超强酸催化合成月桂基溴的研究

Exclusive Stonehenge-cut, Desert Glow crystal pendant on cotton cord; gold-plated lobster clasp closure with extender chain.

独特的打火石形链坠, 沙漠光影色水晶链坠系于棕色棉绳上, 镀金色龙虾扣配以加长饰链.

Cigarette case. cotton-core and flint.

另外还有精品香烟盒、棉芯和火石等配置.

The flint would not strike.

火石打不出火来了.

At present, iron and cerium-containing HMS by molecular assembly in themselves with the template reagent of dodecyl amine in the course of the hydrolytic coagulation of ethyl silicate ( TEOS) was primarily prepared.

采用中性伯胺（DDA）模板剂，在硅酸四乙酯（TEOS）的水解聚沉过程中，将双元金属Fe、Ce引入中孔分子筛骨架中，首次原位合成了分子自组装Fe/Ce-HMS。

The effects of propanedioic acid, succinic acid, hexanedioic acid, sebacic acid and oxalic acid on floatation performance of feldspar and quartz in dodecyl amine system were investigated.

在十二胺捕收剂体系中，研究了丙二酸、丁二酸、己二酸、癸二酸和草酸对长石和石英浮选行为的影响。

In dodecyl amine system, oxalic acid can be as the effective modifier to float feldspar from quartz in dodecyl amine system at pH2.

草酸可以作为在十二胺体系中，在强酸性条件下，实现长石与石英的浮选分离的有效调整剂。

A synthetic method of amine oxide from dodecyl amine was introduced. The factors which influence the reaction and synthetic conditions of tertiary amine oxide were studied.

介绍了用十二胺合成氧化叔胺的方法，研究了叔胺及氧化叔胺的合成工艺条件和影响反应的因素。

Studies on Phase Structures of N, N-Dimethyl-n-dodecyl Amine/ Inorganic Oxyacid System

N，N-二甲基正十二烷基胺/无机含氧酸体系的相态结构研究

The results indicate that the DN 12 is a better cationic collector than the dodecyl amine.

结果表明：DN12的捕收性能优于十二胺；

Adsorption of sodium oleate and dodecyl amine hydrochloride on feldspar and quartz

油酸钠和十二胺盐酸盐在长石和石英表面的吸附

Nipagin esters were synthesized by the esterification of dodecyl and octadecyl alcohol with p-hydroxybenzoic acid in the presence of vitamin C.

以维生素C为催化剂，对羟基苯甲酸和十六醇及十八醇为原料合成尼泊金十六酯与尼泊金十八酯。

The kinetics of homogeneous phase dodecyl alcohol ethoxylation for alcohol ether synthesis has been studied in the presence of KOH catalyst with a continuous tubular reactor. A simplified kinetic model and the reaction rate constant were obtained.

利用连续管式反应器对以KOH为催化剂的均液相月桂醇乙氧基化反应合成醇醚的动力学进行了研究，获得了其简化的动力学模型和反应速度常数k。

Study on the preparation of methylacrylic dodecyl alcohol esters in the catalysis of cationic exchange resin

阳离子交换树脂催化甲基丙烯酸十二醇酯的合成研究

The cotton was falling in price on the international market and the buyers held off.

国际市场上,棉花价格正在下跌,买主们踟蹰不前.

But your father stands in the way because of certain unrealistic scruples.

但是你爸爸因为一些不切实际的清规戒律就踟蹰不前,阻碍了生意的前进.

Wireless technology is advancing by leaps and bounds-and there is much more to come.

无线技术正大步流星地向前跃进 ---- 而且会有更多的发展.

He walked along the path with great strides.

他在这条小路上大步流星地走着.