The diffusion of radio-nuclides in atmosphere was studied on the basis of Gaussian Model.
在高斯烟羽模型的基础上，对核事故中放射性云团在大气中的扩散规律进行了研究。
The depth profile of above nuclides in sediment core and its oceanographic significance were studied.
对岩心中各个核素的深度分布特征及其所蕴含的海洋学意义进行了研究。
This paper reports on the survey of natural radio nuclides in soil and rock conducted in Southeast Fujian.
报道了闽东南地区土壤岩石中天然放射性核素含量调查的结果。
The application and evolution of several therapy nuclides labelled antibody in tumour therapy are introduced.
文章主要介绍了几个治疗核素标记抗体在肿瘤治疗方面的应用与进展。
There are some radioactive nuclides such as uranium, radium, thorium and polonium in pit effluent of uranium mine.
铀矿山坑道污水含有铀、镭、钍、钋等放射性核素，外排前必须加以处理。
A simple, quick, and sensitive method to determine the radioactive nuclides of uranium and thorium in talc is described.
介绍了一种测定滑石粉中放射性核素铀钍的简便、快速且灵敏的方法。
The tracer migration test in horizontal assembly is an important part of the field tracer migration test of nuclides in aquifer.
在水平组件中的迁移试验是核素在含水层迁移试验的重要组成部分。
The results show that the retardation coefficient is negatively related with transport distance and diffusion depth of these nuclides.
结果表明：在其它条件相同的情况下，迟滞系数与这三种核素的迁移距离、扩散深度成负相关关系。
"Radioisotopes" refer to a certain type of elements producing radiation decay that have the same atomic number but different mass of nuclides.
放射性同位素，是指某种发生放射性衰变的元素中具有相同原子序数但质量不同的核素。
For the same nuclides, the change of hydraulic gradient has more influence on relative concentration when the hydraulic gradient is getting smaller.
且对同一种核素而言，水力坡度越小时其变化对相对浓度的变化影响越大。
As viewed from applications the nuclear technology mainly includes the technology of ray and particle beams, and the technology of radioactive nuclides.
从应用的角度讲，核技术主要包括射线和粒子束技术与放射性核素技术。
There are some radioactive nuclides such as uranium, radium, thorium and polonium in pit effluent of uranium mine. The effluent must be treated before discharging.
铀矿山坑道污水含有铀、镭、钍、钋等放射性核素，外排前必须加以处理。
Three samples consisted of standard or quasi-standard substances with known specific activities of some nuclides while the radioactivity of the other sample was unknown.
该比对中的三种样品是由一些具有已知核素比活度的标准物质或准标准物质构成，而另一种是活度未知的盲样。
The content includes chemical states of fission products, fission chemistry of 235U and 238U, radiochemical separation of fission products and measurement of nuclear data of long-lived nuclides et al.
本文论述了我国核化学基础研究的现状，重点介绍了裂变产物化学形态研究、裂变化学研究、裂变产物放化分离方法研究、长寿命核素核数据测量研究等领域的进展和展望。
The content includes chemical states of fission products, fission chemistry of 235U and 238U, radiochemical separation of fission products and measurement of nuclear data of long-lived nuclides et al.
本文论述了我国核化学基础研究的现状，重点介绍了裂变产物化学形态研究、裂变化学研究、裂变产物放化分离方法研究、长寿命核素核数据测量研究等领域的进展和展望。
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