查询词典 uranium-actinium

I was struck by the fact that the activity of uranium and thorium compounds appears to be an atomic property of the element uranium and of the element thorium .

我突然意识到，铀化合物和针化合物的这些活性似乎是元素铀和元素钍的原子属性。

And some discoveries happen by accident. Radioactivity came to light a century after the discovery of uranium when Henri Becquerel used uranium salts and photographic plates in the same experiment and found that one fogged the other.

而有些发现是在偶然间发生的：在铀被发现后，放射学已经出现世纪有余；亨利·贝克勒尔使用铀盐和照相板做同样的试验的时候发现两者可以雾化在一起，于是铀出现了。

Radioactivity came to light a century after the discovery of uranium when Henri Becquerel used uranium salts and photographic plates in the same experiment and found that one fogged the other.

放射性是铀发现一百年之后才被贝克勒尔发现，他在同一个试验中使用了铀盐和显像版，结果发现前者是后者变得模糊。

Radioactivity came to light a century after the discovery of uranium when Henri Becquerel used uranium salts and photographic plates in the same experiment and found that one fogged the other .

在发现铀一百年之后，亨利·贝克勒尔在一实验中同时使用了铀盐和照相底片，发现两者会相互遮盖，从而使放射现象亮相于世。

On the present situation in China, it is a good method to extract uranium from bittern chemical resources in order to solve the problems of lack of uranium resources and environmental protection.

在地球资源日益缺乏的今天，陆地的资源越来越少，如何充分开发利用海洋中的资源将是现在和未来的一个重要课题。

Chalcolite ( crystallized phosphate of copper and uranium) is about twice as radioactive as uranium.

铜铀云母的放射性是铀放射性的两倍。

In-vivo neutron and gamma spectra of depleted uranium sphere and vanadium sphere under central D-T neutron source were measured,with a 18 mm×20 mm stilbene crystal detector, at 7,10,13,16,19,22 cm away to the center in 45° direction in depleted-uranium sphrer, and 1.8,4.8,8.3 cm away to the center in the 0° direction in V sphere.

为获得介质内中子能谱及伴生γ能谱的实验数据，在中心D-T中子照射下，用18 mm×20 mm的茋闪烁体探测器，测量了与D+束成45°角的水平方向距球心7、10、13、16、19、22 cm位置处贫化铀球介质内的中子能谱和伴生γ能谱，以及钒球内与D+束成 0°角、距离球心1.8、4.8和8.3 cm处的中子能谱和伴生γ能谱。

The basic situation of 3 decommission uranium tailings impoundments and 1 large open pit in Germany is introduced, and some special successful engineering measures are reported in detail, including the wastewater treatment, the covering of exposed uranium tailings beach, the stability of dam slope, the back filling of open pit and so on.

介绍了德国正在进行退役治理的3个铀尾矿库和1个大型露天采坑的基本情况，并对已采用的一些成功的工程措施作了比较详细的说明。

The mining of uranium and enriched uranium have been abused, so that rapid deterioration of the Earth's environment.

对铀的开采已及浓缩铀的滥用，让地球的环境迅速恶化。

Uranium and fluorspar miners are exposed at ery high leels to the inert gas, radon, that is a byproduct or uranium decay.

铀和氟矿在例如其副产品或铀衰退后产生的氡之类的稀有气体中的辐射程度非常之高。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。