放射性

Radium does not occur free in nature but occurs in natural ore s such as pitchblende as a disintegration product of radioactive decay of heavier elements, including uranium.

在自然界镭不存在游离状态，但存在于天然矿石中，如沥青铀矿，是更重元素放射性衰变的产物。

The volume of radon chamber is 4 m3, the range of radon concentration is 370~20 000 Bq/m3, and the relative expanded uncertainty of measurement results is no more than 5.8%. The whole testing system can verify/calibrate the radon monitor and study on the radioactive aerosol of radon decay product.

装置氡室体积为4 m3，氡浓度测量范围为370~20 000 Bq/m3，氡浓度值测量结果的相对扩展不确定度不超过5.8%，可用于测氡仪器的检定校准和氡子体放射性气溶胶的实验研究。

Radioactive decay studies have found a kinds of elements can be α or β decay and the decay into another element, while the α-decay product of -α-rays became one of the deep structure of the material means of .1911, the Rutherford and others bombarded atoms with α-rays observed wide-angle deflection to determine the nuclear structure of atoms and nuclei was first proposed the term .1919 year, Rutherford and others have also found that with α-ray bombardment of nitrogen will release the nuclear protons, this is the first time Artificial realization of a nuclear reaction, after the bombardment of nuclei with the radiation caused by nuclear reaction method to become the primary means of research in nuclear.

放射性衰变研究发现了一种元素可以通过α衰变或β衰变而变成另外一种元素，而α衰变的产物——α射线又成了人们探讨物质深层结构的手段。1911年，卢瑟福等人用α射线轰击原子、观察到大角度偏折，从而确定了原子的有核结构，并首次提出原子核这一名词。1919年，卢瑟福等人又发现用α射线轰击氮核会放出质子，这是首次用人工实现的核反应，以后用射线轰击原子核来引起核反应的方法逐渐成为研究原子核的主要手段。

Which is the most important and is the most complicated, moreover, which can provide the basis for decommission method and budget estimation.

为使这些核设施退役达到合理和最优化，就要求我们先充分了解和认识核设施内部的放射性状态，为此需要进行核设施的初始特性调查。

It is obvious that shells have higher capacity to decontaminate the pollution of 89Sr from water.

可见，贝壳类动物对水系中的放射性锶有较强的去污能力。

During the decommissioning of nuclear facilities, it is an important step to decontaminate the soil contaminated by radioactive nuclides.

在核设施退役过程中，对放射性污染土壤的去污是一个重要环节。

The inventive method and device enable to decontaminate the inside surface of a hollow body or a component arranged inside the hollow body (1) which can be a cleaning vessel.

本发明的方法和装置可以消除一个空心体的内表面或一个放在一个可以是一个清洗槽的空心体(1)内的部件的放射性污染。

Comprehensive technological project descriptions are provided, for example compact, portable instruments for identification of hazardous wastes, in-the-field analysis of radioactive materials and laser systems to decontaminate equipment.

这里提供了全面的技术工程描述，例如用于检验危险废物简便工具，放射性物质的分析和净化装置中的激光系统。

This paper referred to the percentage of desalination and decontamination and their function in the technological process.

但也发现在处理本所放化实验室排除的放射性废水时，效果不理想。

The UAC is a multi-planetary conglomerate with radioactive waste facilities on Mars and its two moons, Phobos and Deimos.

该处理器是一个多行星砾岩与放射性废物处理设施对火星及其两个卫星，火卫一和火卫二。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。