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方法 2- 吡咯烷酮经N - 烷基化、氨解反应合成乙拉西坦.用英语怎么说?
方法 2- 吡咯烷酮经N - 烷基化、氨解反应合成乙拉西坦.
Methods Etiracetam was synthesized from 2 - pyrrolidone by N - alkylation and aminolysis.
相关词汇
methods
etiracetam
was
synthesized
from
by
alkylation
and
methods
n. method的复数:方法,方法( method的名词复数 ),方法论,教学法,分类法;
例句
The old
methods
weren't adequate to meet current needs...
老一套方法已不足以满足当前的需要。
etiracetam
乙基氧吡咯烷乙酰胺;
例句
Methods
Etiracetam
was synthesized from 2 - pyrrolidone by N - alkylation and aminolysis.
方法 2- 吡咯烷酮经N - 烷基化、氨解反应合成乙拉西坦.
was
v. 用来表示某人或某物即主语本身,用来表示某人或某物属于某一群体或有某种性质( be的过去式 ),在,存在,不受干扰;
例句
There
was
a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。
synthesized
--
例句
Butyraldehyde 1,2 proparediol acetal was
synthesized
by using stannous chloride as catalyst.
以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.
from
prep. (表示时间)从…,(表示原因)因为,(表示来源)来自…,(表示分离)与…分离[隔开];
例句
...an abortive attempt to prevent the current President
from
taking office.
企图阻止现任总统连任的失败尝试
by
prep. 在…旁边,表示方式,由于,经过;adv. 经过,表示保留或保存时用,短暂拜访;
例句
...expensive make-up that we saw being advertised
by
a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品
alkylation
n. 烷化,烃化;
例句
These derivatives are readily obtained by
alkylation
of 2 - mercaptopyridine and alkyl halides under alkaline conditions.
这些衍生物可以容易地在碱性条件下通过 2- 巯基吡啶和卤代烷的烷基化而得到.
and
conj. 和,与,而且,于是,然后,因此;
例句
I spend a lot on expensive jewelry
and
clothing...
我花很多钱购买昂贵的首饰和衣服。
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿,听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘,一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时,可以向商业票据的背书人要求支付的权力。
相关例句
More than a million satellite dishes have sprouted on homes across the country...
100 多万个卫星接收器迅速出现在了全国各地的家庭用户中。
All parents wish their children could have a safe and beatific life.
父母都渴望他们的孩子们平安快乐。
She is envious of Jane’s good looks and covetous of her car.
她既忌妒简的美貌又垂涎她的汽车。
I have two hats but neither fits me properly.
我有两顶帽子, 但对我都不适合我。
The teacher motioned the boy to study.
老师示意那个孩子去学习。
The events in Los Angeles have sparked a new national self-examination.
发生在洛杉矶的事件再次引发了全国范围的反思。
If he dies, he will become a martyr.
如果他死了, 他将成为烈士。
This division of the chapter has several subdivisions.
该章这一节里又分成几个小节.
I thought the whole business was dead and buried...
我以为这整件事已经完全了结了。
They spent their afternoons playing golf—extremely badly, I may add—around Loch Lomond...
他们下午都在洛蒙德湖边打高尔夫——顺便提一句,球技糟透了。
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