Using alcohol as starting material, double octyl quaternary ammonium bromide was obtained. It's yield reached 80 %.

Operation control and maintenance of lithium bromide absorption refrigerator were introduced.

阐述了溴化锂吸收式制冷机的运行管理与维护.

They also pointedthat farmers throughout the world were already using innovative alternatives to methyl bromide.

他们同时也指出,全世界范围内的农民们已经使用改良过的甲基溴化物了.

Molten lead ( II ) bromide contains mobile ions which conduct electricity.

熔融的溴化铅 ( II ) 具有游动离子,帮助传电.

The method of determination methyl bromide in fumigation progress was developed by GC 5000 A.

探讨了气相色谱法测定熏蒸处理过程中溴甲烷浓度的检测方法.

By adding various dyes to the silver bromide it can be made additionally sensitive green light.

溴化银加入各种化学增感剂后,又可使其感受染色光.

The molluscacidal medicated additive is bromoacetyl bromide or niclosamide.

所述的灭螺药物添加剂为溴乙酰胺或氯硝柳胺.

During baking, bromates are completely reduced to bromides with no bromination of flour constituents.

在焙烤过程中, 不用通过面粉各组分的溴化作用,溴酸盐也会全部彻底地还原成溴化物.

Barbiturates, bromides, tranquilizers and antidepressants.

巴比妥酸盐 、 溴化物 、 镇静剂和抗抑郁剂.

The meeting produced the usual bromides about the environment.

会议上提出的还是那些惯常讨论的关于环境的老套话题。

Bromobenzene, magnesium , antimony trichloride and bromine act as raw materials, dibromotriphenylantimony flame retardant is synthesized.

以溴苯、镁粉 、 三氯化锑、溴素为原料, 合成了二溴三苯基锑阻燃剂.

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

以冰乙酸为溶剂,通过噻吩和溴反应制备了 2- 溴噻吩,并探讨了诸因素对产率的影响.

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.