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它们主要被用来催化Aldol, 烯丙基化, Diels-Alder, Ene和 Friedel -Crafts等反应.用英语怎么说?
它们主要被用来催化Aldol, 烯丙基化, Diels-Alder, Ene和 Friedel -Crafts等反应.
They were principally used to catalyze aldol, allylation, Diels - Alder, ene and Friedel - Crafts reactions.
相关词汇
they
were
principally
used
to
catalyze
aldol
allylation
alder
and
Crafts
reactions
they
pron. 他/她/它们,人们,大家,政府,当局,她们;
例句
The storms had abated by the time
they
rounded Cape Horn.
他们绕过合恩角时,暴风雨已经减弱。
were
be的过去时复数和第二人称单数形式,有时代替 was,用于条件从句、动词 wish 之后等;
例句
Shops, houses, and vehicles
were
set ablaze.
店铺、房子和车辆全都陷于火海。
principally
adv. 主要地,大部分;
例句
This is
principally
because the major export markets are slowing...
这主要是因为主要出口市场发展缓慢。
used
adj. 用过的,习惯于,二手的,旧的;v. 使用( use的过去式和过去分词),常常,经常;
例句
The gym can be
used
by both able-bodied and disabled people.
这家健身房健全和残障人士都可使用。
to
prep. 向,朝着,到,关于,属于;adv. 朝一个方向的,到某种状态,关闭;
例句
I suggest you leave it
to
an expert...
我建议你把它留给专家来解决。
catalyze
vt. 催化,促进;
例句
Any unexpected circumstance that arises may
catalyze
a sudden escalation of violence.
任何突如其来的情况都可能造成暴力骤然升级。
aldol
n. 丁间醇醛;
allylation
烯丙基化(作用);
alder
n. 桤木;
例句
Modification for synthetic purposes on the Diels -
Alder
adducts 56 and 62 has only rarely been considered.
为了达到合成的目的,对Diels-Alder加 成物(56)和(62)加以改造的问题很少有人考虑.
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。
Crafts
n. 工艺( craft的名词复数 ),行业,飞机,飞行器;
例句
...the arts and
crafts
of the North American Indians...
北美印第安人的手工艺
reactions
n. 反应( reaction的名词复数 ),反动,反对,反作用力;
例句
Soya milk can cause allergic
reactions
in some children.
有些孩子会对豆浆过敏。
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
I was quite taken with your line of photocopiers with collation and stapling capability.
我被贵公司能够自动整理和装订的系列复印机吸引住了.
She arose and stood irresolutely at the foot of the stairs.
她起身来到楼梯脚下,犹豫不定地站在那里.
How much is the sixth power of nine?
九的六次幂是多少?
You may skip through a book, reading only those passages concerned.
你可以跳读一本书, 只拣那些有关的段落读一下即可.
There appeared no imminent danger...
眼前似乎没有危险。
Recent events have made his central theme even more apposite...
新近发生的事情使得他的中心主题显得更加有的放矢。
You were at the courthouse today, weren't you, benito, helping bust out sifuentes?
你今天在法院, 对吧, 本尼托, 帮忙添乱?
The trees, the bushes and the tall ferns are carved with alabaster.
无论乔木 、 灌木还是蕨草,都似玉砌冰雕.
'Nice meeting you, Zoe,' I said and slid off.
“很高兴见到你,佐薇,”说完我便溜走了。
Developers will be hawking cut-price flats and houses.
开发商会竭力推销减价的公寓和房子。
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演员首次演出
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多丘陵的
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屑
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