查询词典 radioactive source

Experts noted that the current urban living environment is the main source of radioactive hazards of indoor radon and radioelement content standard building materials.

专家指出，目前城市生活环境中主要放射性危害的来源有室内氡气及放射性元素含量超标的建筑材料等。

The γ-ray source is radioactive isotope of 241 Am which has the emission energy 59.5keV.

射线源为同位素241Am，它发出的光子能量是59.5keV。

Marie had linked the relationship between radioactivity to individual atoms in her first solo paper. The source of the radioactive energy. however, was still a mystery.

玛丽在她首先独自发表了论文中，关联了在放射性与单个原子之间的关系，然而元素放射性的来源仍然是一个谜。

This paper introduces the application of integrated geophysical investigation, including high precision magnetic, multielectrode method and GPR , to systematically detect a radioactive material source sealed in lead container stored in a chamber buried underground,which has been missed.

采用综合地球物理勘查技术，包括高精度磁测、高密度电法和地质雷达对某处遗留于地下的铅封放射源进行了系统探查，对所获得的各类异常数据进行了分析处理，并指出了放射源所在的具体空间位置。

A soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands.

一种软质、银白色、放射性四价金属元素，同位素用作核反应能源，见于钍矿和独居石沙中。

A radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite.

一种放射性矿物，由硅酸钍组成，是钍的来源，见于粗糙的花岗岩中。

As a rapid calculation of radioactive shield attenuation in truncated cone, the cross points penetrated through the truncated right angle cone shielded region from source points to the detector point have been studied via numerical analysis.

提出一种数值解析法计算从放射线源到评价点的放射线所穿透圆锥台形屏蔽物体的交点坐标，从而可快速预测辐射屏蔽衰减率。

By above research, the following results are obtained.(1)The extracting module of aero-radioactive thematic information is integrated with ENVI, the remote sensing image processing software;(2) Based on the IDL, the computer program modules extracting following uranium thematic information have been developed, including initial uranium contents, active uranium contents, uranium migration coefficient, uranium information strengthen, uranium D-value and variance Ratio etc, al. Some of kalium special information extracting modules are also developed;(3)Based on the IDL, the aero-radioactivity information multi-parameter focus analysis module is developed;(4) It is proposed that a lots of phenomenon of uranium immigrating exist in Keping-Kuche are in the Neocene period. Because of the uranium pre-enrichment, the areas with high uranium content were formed in Neozoic and Quaternary. The above migration uranium are also the abundant source for uranium ore-forming in favorable strata of Mesozoic and Cenozoic system;(5)There are obvious uranium immigrating and enrichment in Eastern Portion of Keping Block Uplift, Yinate-Laolongjiang, and Qidaoban-KuChe.

通过上述研究，取得了如下成果：(1)实现了航放专题信息提取模块与ENVI遥感图像处理软件的无缝集成；(2)基于IDL语言开发了初始铀含量、活性铀含量、铀迁移系数、铀信息增强、铀差值方差比等航放铀专题信息，钾专题信息提取处理程序；(3)基于IDL语言开发了航放信息多参数聚焦分析处理程序；(4)发现柯坪-库车地区在晚第三纪开始出现了大量的铀迁移富集现象，不仅使上第三系、第四系沉积时因铀的预富集而形成铀含量高场区，而且也为研究区中新生代有利目的层的铀成矿提供了铀源条件；(5)研究认为，研究区柯坪断隆东段，英阿特-老龙江，七道班-库车等三个区块存在明显的铀迁入富集。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。