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Methods Etiracetam was synthesized from 2 - pyrrolidone by N - alkylation and aminolysis.是什么意思?
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.
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
A lot of the cost of maintenance went into renewing brakes.
很多的维修费用都花在了更换刹车方面.
What is the rationale behind these new exams?
这些新测试的理论依据是什么?
Their indigence appalled him.
他们的贫穷让他震惊.
The frame or chassis on which panels of electrical equipment may be mounted.
可安装电气设备板的框架或底座.
Anti - Psyker aura nullifies all enemy special abilities in their vicinity.
反 Psyker气味在他们的接近中取消所有的敌人特别的能力.
Thirty milch camels with colts , forty kine, and ten bulls, twenty she asses , and ten foals.
哺乳的母骆驼三十匹,各带着驹子, 母牛四十头 、 牛十头 、 驴二十头 、 驴十头.
The organic layer in the neck of the flask is aspirated into the atomic absorption burner.
满至烧瓶颈部的有机层被抽吸进入原子吸收燃烧器中.
One day she will walk out, just as her own mother did...
总有一天她会离家出走,就像她母亲那样。
Wine has been produced by traditional landholders in the Alto Douro region for some 2, 000 years.
在葡萄酒的产区上杜罗,当地人酿酒的历史可以追溯到大约2, 000多年前.
This reduced body cavity is called a hemocoel.
这种缩小的体腔称为血腔.
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最新汉译英
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代替执行某公务
激励猎犬的喝声
基础代谢测量法
拙劣的模仿作品
外强中干的威吓
违法购买金刚石
搭便车的旅行者
次序
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类别层次
的自由
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奴仆似地
作客
剪成不同层次
依次地
住客
客
从
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主
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辩解的理由
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由此
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月桂醇
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肉桂酸