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桥二环辛烷不给出有意义的桥头取代.用英语怎么说？

桥二环辛烷不给出有意义的桥头取代.

Bridged bicyclooctanes gave no significant bridgehead substitution.

相关词汇
bridged gave no significant bridgehead substitution

bridged

v. 在…建桥( bridge的过去式和过去分词 )；

gave

v. 给予，赠送( give的过去式 )，（与名词连用描述某一动作，意义与该名词相应的动词相同），供给，交给；

no

adv. 不，否，一点也没有；adj. 没有的，不许的，一点儿也没有，决不是的；n. 不，否定，否认，反对票，否决票；abbr. 数字(number)，元素锘(nobelium)的符号；

significant

adj. 重要的，显著的，有重大意义的，意味深长的；

bridgehead

n. 桥塔，桥头堡；

substitution

n. 代替，代用，替换，<化>取代（作用）；
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...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。
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“我会进去。”他上气不接下气地说。
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据说, 国王不能随意地忽视反对派, 他现在的表现已是最好的了.
Brezhnev and his team disappeared into other rooms.
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一种火器;有膛线炮的或在来复枪内有内螺旋形槽线的.
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