N, N - Diisopropylethylamine ( DIPEA ) was prepared from diisopropylamine ( DIPA ) and diethyl sulfate ( Et _ 2 SO _ 4 ).以二异丙胺 ( DIPA ) 、硫酸二乙酯 ( Et2SO4 ) 为原料合成N, N二异丙基乙基胺 ( DIPEA ).Objective The study of effect of Diisop...

Cataracts is a condition that affects the transparency of the lenses.白内障是一种影响晶状体透明性的疾病。In one study, light smokers were found to be more than twice as likely to get cataracts as non-smokers.研究表明，即使抽烟不多的人也比不抽烟的人患白内障的概率高出一...

Homoserine has also been implicated in the biosynthesis of methionine.同型丝氨酸也牵涉到蛋氨酸的生物合成.Glycine and succinyl - CoA are precursors of 5 - aminolevulinic acid ( ALA ) biosynthesis.甘氨酸和琥珀酸是红假单胞菌生物转化合成5-氨基乙酰丙酸 ( ALA ) 的前体.Ob...

Choice having introduced the hammerhead and cleading chemical composition.介绍了锤头和衬板化学成分的选择.The most well - known sharks are the great white shark, whale shark, blue shark and hammerhead shark.最著名的有大白鲨 、 鲸鲨 、 蓝鲸和座头鲨.It a h...

You can compress huge amounts of data on to a CD-ROM.可以把大量的数据压缩到一张CD-ROM上。A single CD-ROM can hold more than 500 megabytes of data.一张只读存储光盘能容纳500兆以上的数据。A CD-ROM can store more than 250,000 pages of typed text.一张只读光盘能存储25...

个人套利者中, 除了 邹翰枢 之外, 还有其他人也大量买入权证.Arbitrage individuals who , in addition to Zou Han - shu , are people buying a large number of warrants....

The odours clung to her kitchen clothes.她衣服上粘着浓重的厨房气味.The ship clung to the shore.那条船靠着岸。He clung to the rope with both hands.他双手紧紧抓住绳子。Another man was rescued as he clung to the riverbank...另外一个人因为紧紧攀住河堤而获救。He clung tig...

这位上校样子挺神气, 他的嘴巴 、 双颊和两眼都深深地凹进去, 目光黯淡, 象发了霉似的.The colonel was gorgeous, he had a cavernous mouth, cavernous cheeks, cavernous, sad, mildewed eyes.外面的空气将桶壁压得凹进去了.The air outside pre ed the side in.外面的空气将桶壁压患上凹进去了.The air o...

阿兰·普罗斯特以第三名的成绩结束比赛，实际上已经将世界冠军的位置拱手让人。Alain Prost finished third and virtually conceded the world championship.阿兰·加西亚总统遭右翼反对派喝倒彩。President Alan Garcia was barracked by the right wing opposition.阿兰正和朋友打扑克牌。Alain was playin...

After these delicacies, the trappers were ready for their feast.在享用了这些美食之后, 狩猎者开始其大餐.In fact, European trappers, traders, and explorers have used cukes for ages to fight off starvation.事实上, 很久以前欧洲的捕兽者 、 商人和探险者都是用黄瓜来与饥饿作斗...

However, they lack ASIC - level performance because of their generalized architectures.然而, 由于它们采用归一化的体系结构,故缺乏ASIC档次的性能.Academies and guild halls were two different kinds of Chinese traditional architectures.书院与会馆是两种不同类型的...

Writer believe that the Enfeoffment System System of Officials - hereditary System ofForces were the root cause.笔者认为其根本的原因在于春秋时期的分封制(采邑制)、世族世官制、非常备军制.After Qin Shi Huang unites six countries, will the system of enfeoffme...

横行的纤维即接索则把成对的两个神经节连在一起.The transverse fibres or commissure unite the two ganglia of a pair.在哺乳动物细胞中脑磷脂和神经节苷脂可能执行同样的功能.Those in mammalian cells, the cerebrosides and gangliosides, may perform similar functions.交感神经的神经节位于心...

我给表上紧发条，听着它嘀嗒作响。I wound up the watch and listened to it tick.手表停了还是手表,还能重新上紧发条.A run - down watch is still a watch and can be rewound.时钟不走了,上紧了的发条内所储存的能量到哪里去了?What happens to the energy stored in a wound clockspring when...

It can be a dangerous course of action which might be sound in theory but — ahem — perhaps a trifle risky in practice...这可能是一次危险的行动，在理论上听着无缝可击，但——呃哼——真做起来却可能有点冒险。This is a trifle compared with the important exclusions.比之...

其中前者还改善了烧结矿的低温还原粉化性能.Fluorite can improve low temperature breakdown property of sinter.这些都可以有效地防止滑石瓷的老化和粉化.All these can effectively prevent ceramic based Talc from aging and powdering.惨轻时, 还会爆发痕迹粉化障碍.Seriously, you also...

摆明了是黑钱, 是什么做生意啊.Just being a black money, what business ah.在英格兰, 烂裁判是无能. 在义大利, 烂裁判一定有收黑钱.In England, a bad referee is incompetent. In Italy, a bad referee is corrupt.你们这些家伙如何洗从毒品交易中赚来的黑钱.How you guys launder all the mone...

The woodcutter felled the tree.樵夫砍倒了那棵树.The trees on the mountains within my range of vision had all been felled.山上我视野范围内的树木都被砍倒了。The trees on the mountains within my range of vision had all been felled...山上我视野范围内的树木都被砍倒...

As Faldo's final putt rattled in, he qualified to join a select band of illustrious sportsmen.随着福尔多的最后一杆轻击，球应声入洞，他得以跻身门槛颇高的顶级运动员之列。He is one of this country's top professional sportsmen.他是本国的顶级职业运动员之一。Our schoo...

"Gerald, isn't it?" I began familiarly.“杰拉尔德，是你吧？”我亲昵地开口说道。John Hunt, familiarly known to his friends as Jack约翰∙亨特，朋友昵称他为杰克A brace of tame deer ran familiarly about the house.一对驯鹿无拘无束地在室内跑来跑去....

Conversions from derived type to base type are allowed.允许从派生类型型到基类类型的转换.Conversions from floating - point numbers to integer values truncate the number toward zero.从 浮点数 向整数值的转换将向零截断数字.Few of the intermediates or enzymes...

Ed blackamoor Bell : If it aint, till do dirt the disorderliness gets here.爱德·汤姆·贝尔: 即使不是, 也会有混乱找到这里的....

一句责备话、深入聪明人的心、强如责打愚昧人一百下.A rebuke a man of discernment a hundred lashes a fool.鞭伤除净人的罪恶.责打能入人的心腹.Blows and wounds cleanse away evil, and beatings purge the inmost being.校长用藤条责打不听话的男学生.The headmaster caned the boys for di...

这则古老的寓言流传了数个世纪。The old fable continues to echo down the centuries.寓言之乡a land rich in fable这部寓言是仿照《伊索寓言》写成的.This fable was written after the manner of Aesop....

Here the problem of standing to sing was exaggerated with ejections carried out almost at random.在那里,站起身唱歌的问题几乎无时无刻不被(工作人员的)指责而无限放大.He exaggerated the dangers of the trip in order to frighten them not into going.他夸大了旅行的危...

Vinny, from Australia, so many difficulties, but he never gave up.来自澳大利亚的文尼遇到许多困难, 但他从不放弃....

Some traders are already stacking the red-hot book on their shelves.一些经销商已经把这本火暴的书摆上架了。The result of this stacking of ions is a cubical crystal of common table salt.离子的这种堆砌形成了普通食盐的立方形结晶.Mme Cathiard was stacking the clea...

The agreement was declared void ab initio.此协议自一开始就被宣布无效。We assume that the sex of the lion is ab initio _ indeterminate.我们假设狮子的性别在一开始是不确定的.The anisotropy which is neglected in CFT calculations is considered in ab initio ...

主铬铁岩矿层及麦仑斯基矿层出露不好.The Main Chromitite Seam and the Merensky Reef do not outcrop well.希腊生产耐火级铬铁矿石已有百余年历史.Greece has been producing refractory grade chromite ore for more than a hundred years.铬铁废渣是生产铬盐或其氧化物所排放的废渣.Cr - Fe w...

As the car rental industry polarizes, business will go to the bigger companies.随着汽车租赁业的两极分化，生意将流向较大的公司。The grand building polarizes a deep local pride.这座宏伟的建筑集中体现了当地人深切的自豪感.Ther result shows that the mechanism is probabl...