- 重点词汇
- aart. (用于可数名词或单数名词前,表示未曾提到的)一(人、事、物);用于前有形容词或后有短语的不可数名词前;一(个);每一(个);任一(个);
- elementn. 要素;元素(如金、氧、碳);(学科的)基本原理,基础,纲要;(大团体或社会中的)一组,一群,一伙;有些;(尤指恶劣的)天气;少量;电热元件;(尤指动物的)自然环境,适宜的环境;有点;基本部分;典型部分
- atomsn.原子( atom的名词复数 );原子能;微粒;微量;
- chemical compound化合物;
- twon. 两个;两个东西;两点钟;一对;
- orconj.或,或者;还是;不然,否则;左右;
- containingv.控制( contain的现在分词 );克制;牵制;包含;
- radicaladj.根本的,基本的;激进的;彻底的;[植]根生的;
- bound to上行;不免;
- anotheradj. 又一个;再一个;另一的;其他一种;
- 相关例句
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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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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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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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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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.
词典精选例句
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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结论: 溴隐亭对糖尿病人有明确的降糖作用, 其降糖机理可能不是改变升糖激素水平.
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Aim To establish an HPLC for determination the content of bromocriptine mesylate Tablets.
目的建立高效液相色谱法测定甲磺酸溴隐亭片的含量.
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结论支气管动脉DSA造影技术对肺部疾病的介入治疗有重要意义.
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