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Chemical bond mainly includes electrovalent bonds , covalent bonds, and metalic bonds.是什么意思？

Chemical bond mainly includes electrovalent bonds , covalent bonds, and metalic bonds.

化学键主要有离子键 、 共价键 、 金属键.

相关词汇
chemical bond mainly includes electrovalent bonds covalent and

chemical

adj. 化学的，用化学方法制造的，化学作用的；n. 化学药品，化学制品；
例句
The chemical companies had amalgamated into a vast conglomerate...
那些化学品公司已经合并成一个庞大的企业集团。

bond

n. 纽带，联系，债券，保释金；v. 使结合，建立互信关系，与…紧密联系，与…黏合；
例句
The eight-year bond will bear annual interest of 10.5%.
这种8年期的债券年利率为10.5%。

mainly

adv. 大部分地，主要地，基本上；
例句
Thousands of people, mainly Zulus, assembled in a stadium in Thokoza...
数以千计的人，主要是祖鲁族人，聚集在托考查的一个体育场里。

includes

v. 包括( include的第三人称单数 )，包含，列入，包住；
例句
The show includes canvases by masters like Carpaccio, Canaletto and Guardi.
画展上有卡尔帕乔、卡纳莱托和瓜尔迪等大师们的油画作品。

electrovalent

adj. 电价的；
例句
Chemical bond mainly includes electrovalent bonds , covalent bonds, and metalic bonds.
化学键主要有离子键 、 共价键 、 金属键.

bonds

n. 纽带（ bond的名词复数 ），黏合，联系，债券；
例句
There are tangible signs that the republic's successfully breaking its bonds with Moscow.
有明显迹象表明该共和国成功地断绝了与莫斯科的密切联系。

covalent

adj. 共有原子价的，共价的；
例句
In covalent bonding, atoms share electrons.
在共价键联中, 原子共有电子.

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
He's got a bad stammer.
他口吃非常严重。
They sensibly invested their prize money rather than spending it.
他们明智地把奖金用于投资而不是花掉。
For the ancient Mexicans, life and death were inseparable, two halves of the same whole.
对古代墨西哥人来说,生与死是同一整体不可分割的两个部分。
The local police had warned visitors to keep off the beach at night.
当地警方告诫游客不要在夜间去海滩。
The professor rather threw me by asking if I went in for martial arts.
教授问我是否爱好武术，这个问题让我吃了一惊。
Bacon was a famous essayist.
培根是着名的散文家.
Now is your opinion different, Mr. Henderson?
亨德森先生, 现在你的感觉不同了 吧 ?
This country refuses stubbornly to make amends for its past war crimes.
该国顽固地拒绝为其过去的战争罪行赔罪.
There is so much outfitting work. Do you subcontract some of them?
有这么多的舾装工作要做, 你们将工程分包出去 吗 ?
He prides himself on his wonderful shooting.
他为自己高超的射击技术而得意.