Synthesis of 2-bromothiophene using thiophene and bromine and glacial acetic acid as solvent was studied.

Objective To observe the efficacy of bromine-containing disinfectant in on-the-spot disinfection of swimming pool water.

目的观察含溴消毒剂对游泳池水现场消毒效果.

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The yield was higher using bromine The yield was higher using bromine than chlorine.

用溴比用氯时产出率高.

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A chemical compound containing two bromine atoms bound to another element or radical.

叠氮原子团和一种元素或一种基结合形成的一种化合物.

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A new method for determining the bromine content in brominated polystyrene was studied.

提出了测定溴化聚苯乙烯中溴含量的方法.

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Magnesium mine, salt mine , Bromine mine, Piezoelectric Crystal.

镁矿, 盐矿,溴矿, 压电水晶, 铸石用玄武岩.

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Test standard samples of bromine number 0.

以容量法测定溴值在0.

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Main product has bromine of chloride, industry, magnesium chloride to wait.

主要产品有氯化钾 、 工业溴 、 氯化镁等.

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Beryllium, bismuth, and bromine must be considered as well.

少量的还包括还有铍 、 铋 、 溴.

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The preparation and catalytic properties of different bromine-free catalysts were discussed.

溴蒽类催化剂的活性较低,相应的研究也较少.

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Bromine can restrain central nervous system and avoid insomnia.

溴:抑制中枢神经,有镇静作用,能防治失眠.

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Derivatives of bromine are much more active than the corresponding one of chlorine.

溴的衍生物的活性要比相应的氯的衍生物大得多.

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The number of cationic bromine and chlorine compounds is restricted.

溴、氯阳离子化合物的数量受局限.

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That's what happened to Harry Barritt of London's Bromley borough.

住在伦敦的布罗姆利自治市的哈里.巴里特就经历了此事.

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You carry on up Bromley Street till you get to the traffic lights.

顺着bromley街继续往前走,走到红绿灯.

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In this discussion with Micah the wiry old captain tended to ignore his ineffective Son, Bromley.

在同弥迦谈这类事情时,精明的老船工有意忽略他的无能的儿子布朗利.

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The neighbours were professional people, most of whom daily commuted to London from Bromley Station.

邻居都是职员, 大部分人每天都从布郎利车站乘车到伦敦上班.

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Methods: α-Bromo-4-benzyloxy acetophenone is synthesized with 4-hydroxy acetophenone and bromonium as materials and methanol as solvent.

方法: 以甲醇为溶剂,以对羟基苯乙酮和溴为原料制备了α - 溴-4-苄氧苯基苯乙酮.

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A method for the determination of 6-bromo-2-naphthol and 2-naphthol is described.

采用高效液相色谱法同时测定了6-嗅-2-萘酚和 2- 萘酚的含量.

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Objective: A new approach to prepare α-bromo-4-benzyloxy acetophenone was introduced.

目的: 报道一种合成α - 溴-4-苄氧苯基乙酮的新方法.

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This product with Br 2 was obtained 2-bromo-4,5-hydroxymethoxybenzaldehyde through bromination.

再溴代得到2-溴 -4,5-二甲氧基苯甲醛,收率为91.9%,并分析溴代过程中甲酰基的邻位效应及溴代产物的稳定性.

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