查询词典 radioactive

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。

The nuclear facilities for military business of our country in 1950 to 1970 will go into the stage of decommission, In order to make the decommission reasonable and beneficial, it request us to understand the Radioactive circumstance of the nuclear facilities, namely characteristic investigation at the beginning.

我国50-70年代为国防事业建立的军用核设施已进入退役阶段。

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。

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。

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。

An abrasive system for use in high cleaning, controlled abrasivity dentifrice compositions comprises at least one abrasive silica which may be selected from a first silica having a Radioactive Dental Abrasion in the range 30 to 150 and a second silica an RDA in the range 100 to 300, and a crystalline aluminosilicate having an average crystallite size below 0.2 mu m.

一种用于高度清洁、控制磨损的牙膏组合物的磨料体系，包括可选自放射性牙齿磨损在30-150范围内的第一二氧化硅和RDA在100-300范围内的第二二氧化硅中的至少一种磨料二氧化硅，和平均微晶尺寸低于0.2μm的结晶铝硅酸盐。

This national security policy of depopulation is now being carried out by means of global low-level radioactive DU pollution.

这国家安全政策的销毁，现正方式进行全球性的低放射性杜污染。

The global pollution of the atmosphere with depleted uranium radioactive poison gas since 1991 is causing a global epidemic of chronic illnesses, which will contribute to extensive depopulation and ecological destruction.

全球污染大气层与贫化铀的放射性毒气自1991年以来，是导致全球流行的慢性疾病，这将有助於广泛的销毁和生态破坏。

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。