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.

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

用溴比用氯时产出率高.

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.

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.

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

镁矿, 盐矿,溴矿, 压电水晶, 铸石用玄武岩.

Test standard samples of bromine number 0.

以容量法测定溴值在0.

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.

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

少量的还包括还有铍 、 铋 、 溴.

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.

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.

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.

The number of cationic bromine and chlorine compounds is restricted.

溴、氯阳离子化合物的数量受局限.

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.

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.

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.

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.

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.

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.

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.

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.