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单词 Radioactive materials
释义

Radioactive materials

英语例句库

27 PBq of radioactive material.

27个1015底夸克的放射性物质。

Monoclonal antibody agents can be obtained by coupling the chemotherapy agents, radioactive materials, biotoxin and monoclonal antibody.

将化疗药物、放射性物质以及生物毒素等与单克隆抗体偶联就得到单克隆类药物。

We found that pitchblende contains at least two radioactive materials, one of which, accompanying bismuth, has been given the name polonium, while the other, paired with barium, has been called radium.

我们发现沥青铀矿物中至少含有两种放射性物质:与铋伴生的命名为钋,与钡伴生的命名为镭。

原声例句
BBC 听力 2023年1月合集

The radioactive material was discovered in a shipment of scrap metal.

这些放射性物质是在一批废金属中发现的。

少年谢尔顿-第二季

Do you have any idea where I could obtain radioactive material?

你知道我应该去哪找放射性物质吗?

VOA Standard 2014年3月合集

Tons of radioactive material shot into the sky when the reactor exploded.

当反应堆爆炸时成吨的辐射性物质射入天空。

VOA Special 2023年3月合集

In addition, nuclear experts say rice naturally takes in little radioactive material.

此外,核专家表示,大米天然吸收的放射性物质很少。

少儿畅学课堂

Long exposure to radioactive materials without any safety measures had damaged her body.

由于长期暴露在射线物质中,且不做任何安全措施,她的身体受到了伤害。

VOA常速英语_美洲

She says exposure to radioactive materials and chemicals took a toll on her body.

她说,接触放射性物质和化学物质对她的身体造成了很大的伤害。

少年谢尔顿-第二季

The problem is, I don't know where to get the necessary radioactive material.

问题是我不知道上哪找所需的放射性物质。

CNN 10 学生英语 2023年2月合集

Now, imagine the pressure when this tiny capsule is filled with a highly radioactive material.

现在,想象一下当你知道这个小胶囊充满高放射性物质时的压力。

Scishow 精选系列

At the time, we didn't really understand how bad playing with radioactive material was.

在那个时候,我们并不知道接触放射性物质有多糟糕。

VOA Special 2021年4月合集

The exact amount of radioactive material that would remain in the water is not known.

目前尚不清楚污水中放射性物质的确切数量。

AP 听力 2013年12月合集

A cargo truck carrying medical equipment with dangerous radioactive material was stolen from a gas station in central Mexico.

一辆运载医疗器械及危险放射性物质的卡车与墨西哥中部的一家加油站被盗。

NPR音讯 2021年4月合集

It turned out that the water contains more than tritium, some more radioactive materials that also in the water.

事实证明,污水中不仅含有氚,还含有一些放射性物质。

少年谢尔顿-第二季

Please tell him Sheldon Cooper called again and that I've successfully obtained the radioactive material that I'm looking for.

请告诉他谢尔顿·库珀又来电话了,告诉他我成功地得到了我一直在找的放射性材料。

当月CRI在线

Two workers at the nuclear facility were hospitalized last week after accidentally getting sprayed with liquid tainted with radioactive materials.

上周,核设施的两名工人因意外被含有放射性物质的液体喷洒而入院。

当月 CNN 10 学生英语 2021年4月合集

What Japan plans to do is remove most of the radioactive material from it and release it gradually into the sea.

日本计划“净化”核废水中大部分放射性物质后,将其逐渐排入太平洋海域。

VOA Special 2021年8月合集

There is also the possibility that the water they find will have too much uranium, a radioactive material that can cause illness.

他们发现的水资源还可能铀含量超标,铀是一种可能引发疾病的放射性物质。

Scishow 精选系列

And ultimately, the storage tanks detonated with the equivalent of almost 70 metric tons of TNT, releasing a ton of radioactive materials.

最终,储油罐被引爆,相当于近 70 公吨 TNT 炸药,释放出一吨放射性物质。

TED-Ed(视频版)

The irradiated fuel is a mix of uranium that failed to fission, fission products, and plutonium, a radioactive material not found in nature.

辐射性燃料是由裂变失败的铀,裂变过的铀,和一种自然中不存在的 放射性钚混合而成的。

Kurzgesagt 科普动画

The amount of radioactive material in the environment doubles worldwide, which still isn't civilization-ending, but we may see more cancer for a while.

世界范围内放射性物质在环境中的浓度将会翻倍,尽管这并不会终结文明,但它可能会在一段时间内增加癌症发病率。

Crash Course 综合篇

How can we use radioactive materials more efficiently?

我们如何才能更有效地使用放射性物质?

中文百科

放射性 Radioactive decay

(重定向自Radioactive materials)
放射性的标志。Unicode所收录的编码为U+2622(☢)
1907年居里夫妇及他们在巴黎的实验室
放射性和侦测到电离辐射之间的关系
 α粒子的穿透力最小,一张纸可挡住。β粒子可由铝屏蔽。伽玛射线穿透力强,必须使用实质性的障碍,例如一层非常厚的铅,但仍然未能完全阻挡[8]。

放射性是指元素从不稳定的原子核自发地放出射线,(如α射线、β射线、γ射线等)而衰变形成稳定的元素而停止放射(衰变产物),这种现象称为放射性。衰变时放出的能量称为衰变能量。原子序数在83(铋)或以上的元素都具有放射性,但某些原子序数小于83的元素(如锝)也具有放射性。而有趣的是,从原子序93开始一直到锫元素有以下特性:原子序是偶数的,半衰期都特别长。由于偶数元素的原子核含有适当数量的质子和中子,因此形成有利的配置结构。〈即魔数〉

对单一原子来说,放射性衰变依照量子力学是随机过程,无法预测特定一个原子是否会衰变。不过原子衰变的机率不会随着原子存在的时间长短而改变。对大量的原子而言,可以用量测衰变常数计算衰变速率及半衰期。其半衰期没有已知的时间上下限,范围可以到55个数量级。

英语百科

Radioactive decay 放射性

(重定向自Radioactive materials)
Alpha decay is one type of radioactive decay, in which an atomic nucleus emits an alpha particle, and thereby transforms (or
Pierre and Marie Curie in their Paris laboratory, before 1907
Taking an X-ray image with early Crookes tube apparatus in 1896. The Crookes tube is visible in the centre. The standing man is viewing his hand with a fluoroscope screen; this was a common way of setting up the tube. No precautions against radiation exposure are being taken; its hazards were not known at the time.

Radioactive decay, also known as nuclear decay or radioactivity, is the process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma rays and conversion electrons. A material that spontaneously emits such radiation is considered radioactive.

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更新时间:2025/6/18 13:14:34