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Caesium - 137 is a radioactive isotope, formed mainly through nuclear fission.是什么意思？

Caesium - 137 is a radioactive isotope, formed mainly through nuclear fission.

铯-137是一种放射性同位素, 主要由核分裂产生.

相关词汇
caesium is radioactive isotope formed mainly through nuclear fission

caesium

n. 铯；
例句
It is cool and filter the precipitated caesium dichloroiodide.
这是冷却,滤出沉淀的二氯碘化铯.

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。

radioactive

adj. 放射性的；
例句
Wine is radioactive but few people stop drinking it on that account.
酒是有放射性的，可是很少有人因此而戒酒。

isotope

n. [化]同位素；
例句
...tritium, a radioactive isotope of hydrogen.
氢的放射性同位素氚

formed

adj. 成形的，成形加工的；v. 形成，构成，产生( form的过去式和过去分词 )，是，（使）成形，结成（友谊）；
例句
A frown formed between her arched brows.
她皱起两道弯眉。

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。

through

prep. 通过，穿过，经由，透过，凭借；adv. 从头到尾，彻底，自始至终；adj. （电话）接通，通话完毕，有洞的，直达的；
例句
The proposal was instantly voted through with two to one in favour, accompanied by enthusiastic applause...
在热烈的掌声中，提案以2比1的优势很快通过了表决。

nuclear

adj. 原子核的，原子能的，[细胞]细胞核的；
例句
...members of the advisory committee on the safety of nuclear installations...
核设施安全顾问委员会的成员

fission

n. <物>（原子的）分裂，裂变，<生>分裂生殖；
例句
The fission of the cell could be inhibited with certain chemicals.
细胞的裂变可以通过某些化学药品加以抑制.
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
These suits are designed to protect the wearer from cold shock as they enter the water.
这些服装旨在避免穿着者入水时发生冷休克。
Always walk facing the oncoming traffic.
走路一定要面向驶来的车辆。
He was very guileless in affiliating with people.
与人交往,他非常朴实.
As you make your bed so you must lie on it.
你自己铺好的床铺，就要自己睡在上面。即&ldquo;自食其果&rdquo;
...JPEG images.
JPEG格式的图像
How are you getting along with your business, Mr Lough?
洛夫先生, 生意一向不错吧?
They poured out the rest of the wine and she chinked his mug.
他们把剩下的酒全倒出来，她和他碰了一下杯。
Title : Diabetic lung and its clinical significance another target organ in microvascular lesions in diabetes?
糖尿病肺及其临床意义--糖尿病微血管病变的又一靶器官?
...a committee of ministers.
部长委员会
The team performs under a circus tent.
这队在马戏团帐篷下演出。