查询词典 uranium ray

Based on the analysis results and the principle that the concentration of the contaminants in a mine varies in a constant ratio and the degree of their hazard varies in an arithmetic progression,the evaluating indicators were determined for the air quality in a uranium mine,and an evaluation model was proposed for the evaluation of the air quality in a uranium mine based on integrated scale index on ...

该模型克服了传统评价方法主要从辐射危害的角度进行评价的局限，能综合评价铀矿山井下空气的质量。采用该模型对某铀矿井4个用风点的空气质量进行了评价，获得了4个用风点空气质量综合评价等级和应采取的相应的对策。评价结果能为铀矿井通风系统的设计和空气质量的安全评价提供参考。

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。

He became prime minister in 1997 and won international acclaim for his role in the Northern Ireland peace process.

他在1997年成为总理，并且因为在北爱尔兰的和平进程中发挥的作用受到国际社会的赞许。

Mixed Page Sorting Method Using the cuttable user model, this thesis proposes a mixed page sorting method by using cutted user model in server-side and complete user model in client-side.

隐私分级利用的混合式页面排序方法针对个性化搜索中搜索结果排序的问题，本文利用隐私可控开放的用户偏好模型，提出一个在客户端和服务器端分步进行的隐私分级利用的混合式页面排序方法。