查询词典 Methy brom

In our research on study chemical reaction of active methylene compounds and brom-acetophenone. Because of brom-acetophenone is compound that contain carbonyl and halogen ,which will take place electrophilic substitution and nucleophilic addition. When active methylene compounds are ethyl acetoacetate and β-diketone, controlling reaction condition, we have found that mono-substitution's production and di-substitution's. production is isolated; active methylene compounds are acetoacetanilide and acetoacetanilide derivate, pyrrolidin-2-one derivants were obtained by substitution and close-ring reaction .but there is no report about it.

本文是让活泼亚甲基类化合物与溴代苯乙酮发生化学反应，由于溴代苯乙酮是含有羰基的卤代烃结构，它可以发生亲电取代和亲核加成反应，当活泼亚甲基类化合物为乙酰乙酸乙酯和β-二酮时，控制反应条件可以发生单取代和双取代两种产物；当活泼亚甲基类化合物为乙酰乙酰芳胺类化合物来反应时，溴代苯乙酮中的羰基与氨基会发生分子内的关环反应生成吡咯烷-2-酮衍生物，这在以前的研究中是没有发现的。

Brom drive his favorate Daredevil to the ball night, all the girl feeling happy when Brom was came.

Brom骑着他心爱的Daredevil来到了晚会，所有女孩儿看到他来了都别提多高兴了。

Brom Van Brunt rode to the party on his fastest horse called Dare Devil. All

布罗姆。范布伦特骑着他的最好的马，名叫大胆魔鬼，去参加了舞会。

Where's Brom Dutcher?

" "在哪里姆维奇达彻？

In accordance with the fact that 5-brom-odeoxyuridinecan incorporate period-ically into the nuclear DNA to substitutethe thymidine in DNA,we devoloped a newbasic fuchsin staining method in which weused BrdU as a chromosomal marker in in situnick translation of chromosomes.

根据5—溴脱氧尿嘧啶核苷可周期性替代DNA链中的胸腺嘧啶核苷而显示不同细胞周期染色体的特性，我们用BrdU作为染色体的标记，首次建立了一种硷性复红染色的染色体原位切口移位的新方法。

Ichabod and Katrina dance together, Brom stare at them, and he feels ncomfortable and full of jealousness.

Ichabod和Katrina翩翩起舞，Brom则看着他们两个，妒火中烧。

The former West Brom loanee knows places at United are fierce and is happy to stay fit and sharp for when Ferguson calls upon his services.

这个曾经租借给West Brom 的球员知道呆在曼联是困难的，而且很开心能留下和胜任SIR随时的召唤。

West Brom threw everything forward looking for a priceless equaliser but in the end it was United who came closest to scoring again as Ronnie Wallwork denied Saha a hat-trick with a fine close-range block.

者应该让西布朗缴械了，但是勇敢的他们进行了反击，替换新鲜血液埃灵顿商场，12分钟后他接到格林宁的角球用和萨哈相同的方式回敬了曼联一个。

A brace of goals versus West Ham in early May saw him move beyond St John in the Anfield record books prior to claiming the opening goal against West Brom at The Hawthorns.

五月初在安菲尔德的首开纪录让他超越在总进球数超越伊恩-圣约翰，并且在山楂球场面对西布朗的时候首开纪录。

The research aimed to study the effects of methy jasmonate on bulblet and scale leaf growth of Lilium 'Mona' in vitro, to solve vigorous growth of scale leaves during tissue culture of bulblets in Asiatic Lilium.

［目的］研究茉莉酸甲酯对组培"Mona"百合鳞茎及鳞片叶生长的影响，以解决亚洲系统百合在试管鳞茎培养过程中鳞片生长过旺的问题。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。