有奖纠错
| 划词

The purified polysaccharides is determined by colourimetry with sulfuric acid phenol as colourimetric reagent.

测得多糖的含量为65。

评价该例句:好评差评指正

The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.

用溴代苯乙酮和溴苄为烷基化试剂,以高产率和100%的转化率以及100%的选择得到了的O-烷基化产物。

评价该例句:好评差评指正

Catalytic synthesis of phenetole by ethylation of phenol with diethyl carbonate(DEC)in fixed bed reactor was investigated.

以碳酸二乙酯(DEC)为乙基化试剂,与苯在气固相条件下催化合成苯乙醚。

评价该例句:好评差评指正

RESULTS Zhike syrup obviously prolonged the incubation period of coughing and increasel the bronchotracheal secretion of phenol red.

结果止咳露使咳嗽潜伏期延长,使气排泌量明显增加。

评价该例句:好评差评指正

The primary synthetic methods of 4-hydroxycoumarin was reviewed starting from phenol, 2-acetylsalicylic acid, methyl salicylate, and o-hydroxyacetophenone respectively.

概述了4-羟基香豆素的合成方法,重点介绍了苯法,乙酰水杨酸法,水杨酸甲酯法,邻羟基苯乙酮法。

评价该例句:好评差评指正

The technique for preparing phenol formaldehyde resin from phenolated wood (PWF) and its characters were studied and analyzed.

本文研究了用化木材制备醛树脂的技术,并能进行分析。

评价该例句:好评差评指正

It is based on the catalytic effect of phenols for the oxidation of gallocyanin by sodium bromate in sulfuric acid medium.

在硫酸介质中,利用催化溴酸钠氧化花青的反应,联用顺序注射技术建立了顺序注射催化动力学光度法测定废水中痕量的新方法。

评价该例句:好评差评指正

BMI resin systems modified by allyl methylphenol ether,allyl methylphenol, allyl methol phenol and diallyl bisphenol A, respectly have been studied.

以烯丙基甲醚、烯丙基甲、烯丙基甲和二烯丙基双A改BMI所得树脂体系进行了研究。

评价该例句:好评差评指正

Chloroxylenol , a halogenated phenol, is a germicide that is effective against gram negative and gram positive bacteria, fungi, and yeast.

Chloroxylenol ,一个卤代,是一种有效的杀菌剂是革兰氏阴菌和革兰氏阳菌,真菌和酵母。

评价该例句:好评差评指正

It was found that the removel of phenol, CN , and COD in 40-60 C range is as high as mesophile temperature.

嗜热菌在40~60℃内能有效地去除废水中、氰和COD,活比嗜温菌大,污泥沉降能好,剩余污泥少。

评价该例句:好评差评指正

In order to get polyaryloxyphosphazene, polyphosphazene's side chlorines are directly substituted by aryloxy of phenol using triethylamine as the bind acid agent.

然后以三乙胺为缚酸剂,使高聚氯化磷腈直接与类化合物进行取代反应,合成了标题高聚物。

评价该例句:好评差评指正

Coking residuary water contains phenol and cyanogens, which contaminate water source badly. Therefore, the coking residuary water has to be dealt with and discharged.

焦化含、氰污水的来源很广,水源污染严重,焦化污水必须加以处理,合格后才能排放。

评价该例句:好评差评指正

A new camphol sandaliol was synthetized by selective alkylation of isocamphol and phenol with acidic catalyst, and following hydrogenated in the presence of Raney nickel.

本文用异龙脑与苯在酸催化剂作用下进行选择烷基化反应,再经催化氢化还原得到龙脑檀香产品。

评价该例句:好评差评指正

Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.

着重介绍用过氧化氢和过氧化羧酸作羟基化剂,使苯羟基化生成邻苯二苯二的研究开发进展。

评价该例句:好评差评指正

Compared with that of furane resin bonded sand,the feasibility of phenol resin bonded sand in forming a uniform coating layer in the inside mould surface is studied as well.

本文分析研究了砂在铸型中的成型条件及光洁内表面的形成机理,并比研究了覆膜和呋喃自硬砂在铸型内表面形成均匀覆砂层的可行

评价该例句:好评差评指正

P - tert - octylphenol (shorten by PTOP), the alkylation product of phenol with diisobutylene(shorten by DIB), has been largely applying in varied fields such as rubbers, oil additives and so on.

叔辛基(PTOP)作为二异丁烯(DIB)的下游产品,是一种用途广泛、具有广阔的市场前景的精细化工产品。

评价该例句:好评差评指正

用户正在搜索


keratoelastin, keratogenesis, keratogenous, keratoglobus, keratohemia, keratohyalin, keratoid, kerato-iridocyclitis, kerato-iridoscope, kerato-iritis,

相似单词


3G, 401(K), a,

声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。

科学60秒-科学美国 2019年8月合集

And phenol is used in the manufacture of certain medicines.

酚类则被用于制造某些药物。”

评价该例句:好评差评指正
俞敏洪:用100个句子记完7000个单词

Because of its irritating effect on humans, the use of phenol as a general antiseptic has been largely discontinued.

4。酚对有刺激性作用,它基本上已不再被当作常用的腐剂了。

评价该例句:好评差评指正
潘潘

He went through all the difficult phases then invented a new pharmaceutical made of phenol.

他克服了所有困难阶段,发明了一酚制成的新药剂。

评价该例句:好评差评指正
TED-Ed(视频版)

In 1907 a chemist combined phenol— a waste product of coal tar— and formaldehyde, creating a hardy new polymer called bakelite.

1907 年, 一位化学家将酚(一煤焦油的废品)和甲醛结合在一起,创造出一名为电木的坚固新型聚合物。

评价该例句:好评差评指正
Osmosis-微生物

This can be tested by transferring a pure sample of bacteria from the culture to a sterile tube containing a mixture of " urea agar" broth and phenol red.

可以把细菌样本放置到一个混合有尿素、琼脂、肉汤和酚红的无菌试管中进行检测。

评价该例句:好评差评指正

用户正在搜索


keratometric, keratometry, keratomileusis, keratomycosis, keratonosis, keratopathy, keratophagia, keratophyre, keratoplasia, keratoplasty,

相似单词


3G, 401(K), a,
  • 微信二维码

    关注我们的微信

  • 手机客户端二维码

    下载手机客户端

赞助商链接