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Hardness is caused by divalent metallic cations.是什么意思？

Hardness is caused by divalent metallic cations.

硬度是由一些两价金属阳离子引起的.

相关词汇
hardness is caused by divalent metallic

hardness

n. 坚硬，<物>硬性，困难，冷酷；
例句
He had slipped from hardness into affability.
他从声色俱厉变得和颜悦色.

is

vt.& vi. 是（be的三单形式；n. 存在；
例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

caused

人为的；
例句
The report has caused acute embarrassment to the government...
报告将政府置于窘境。

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

divalent

adj. 二价的；
例句
Hardness is caused by divalent metallic cations.
硬度是由一些两价金属阳离子引起的.

metallic

adj. 金属的，金属性的，金属制的，含金属的；
例句
There was a metallic click and the gates swung open...
随着一声金属碰击的咔嗒声，大门打开了。
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。
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The young people friends, exert oneself diligently!
青少年朋友们, 奋发努力吧!
Mail order is a convenience for buyers who are too busy to shop.
邮购对于那些没有时间逛商店的购物者来说是一项非常方便的服务。
You don't belong here...
你不属于这里。
Work the flour and yeast mixture together until you have a sticky dough.
将面粉和酵母混在一起和成黏糊糊的面团。
Everyone apart from Mom had gone home.
除了妈妈,大家都回家了。
Sumres are foreign bodies but a necessary adjunct in surgery.
缝线是一种异物,但是一种在手术中必要的附属品.
Casals greatly influenced later cellists with his technique,misicianship,and beautiful tone.
卡萨尔斯以他的表现手法和技巧、音乐家的风范及优美的曲调对以后的大提琴手产生很大影响。
a diet that is deficient in vitamin A
缺乏维生素A的饮食
He was in a positive fury...
他确实发怒了。
Characteristic behoove makes competition ability and translate into productivity.
特色理应成为竞争力并转化为生产力.