We can talk about the half-life of a radioactive isotope, and indeed we can measure and state very very precisely what that half-life is. 我们可以谈论放射性同位素的半衰期,我们确实可以非常准确地测量和描述半衰期是什么。
A radioactive isotope of strontium ( with the mass number 90) that is present in the fallout from nuclear explosions; can be assimilated like calcium into bones. 锶的放射性同位素(原子质量数为),存在于核爆炸的原子尘中,能象钙一样被吸收到骨中。
A radioactive isotope of carbon. 碳的一种放射性同位素。
With a nonlethal dose of a radioactive isotope. 加入一剂非致命的放射性同位素。
Portable area monitor radioactive isotope survey 便携式地面辐射监测仪放射性同位素监测仪
X-ray diffraction micrography Autoradiography A technique whereby a tin slice of tissue containing a radioactive isotope is placed in contact with a photographic plate. X射线衍射显微照片放射自显影术:将含有放射性同位素的一小薄片生物组织与感光层接触的一项技术。
Any radioactive isotope introduced into the body to study metabolism or other biological processes. 为了研究新陈代谢或其他生物学过程而引入身体的放射性同位素。
Alpha-contamination meter radioactive isotope survey α放射性沾污测量仪放射性同位素监测仪
The importation of the radioactive isotope, radiation equipment and other radioactive materials should come up to applicable state regulations. 进口放射性同位素、射线装置和含有放射性物质的物品的,按照国家有关规定办理。
A radioactive isotope of cobalt with mass number 60; a source of exceptionally intense gamma rays; used in radiation therapy. 具有放射性的钴的同位素,原子质量数为,一种能量极高的伽马放射源,用于放射疗法。
A radioactive isotope of cesium used in radiation therapy. 铯的一种放射性同位素,用于放射疗法。
A radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction. 使化合物中化学反应的机制显踪的放射性同位素。
Distinguish ( an element or atom) by using a radioactive isotope or an isotope of unusual mass for tracing through chemical reactions. 用放射性同位素或不寻常质量的同位素使元素或原子显示运动踪迹。
PET uses the positron nuclide which are radioactive isotope marker the life substances C, H, O, N. So PET could display metabolized processes of alive organism ( include human being) rapidly and in real time. PET运用标记生命物质C,H,O,N的放射性同位素-正电子发射核素,所以PET可以在不影响生物体生理功能的情况下,快速、实时显示活生物体(包括人体)的代谢过程等生命活动。
Study on the water movement in a sandy soil by means of radioactive isotope~ ( 131)ⅰ 利用放射性同位素~(131)I研究砂土的释水性
Investigation of artificial radioactive isotope~ ( 137) cs in Okinawa Trough sediments 冲绳海槽沉积物中人工放射性~(137)Cs的分布规律
At present, injection profile logging is widely used in oilfield development, but there are some problems in radioactive isotope tracer injection profile logging, such as isotope staining, channeling, leakage and bottom hole accumulation etc., severely influencing the logging data interpretation and application. 注入剖面测井在油田开发过程中的应用非常广泛,但在放射性同位素示踪注入剖面测井中存在很多问题,例如同位素沾污、窜槽、漏失及井底堆积等,严重影响了资料的解释与应用。
Serum calcium level declined after treatment and reduction of bone radioactive isotope collection was found in34pa ˉ tients. 治疗后血清钙离子水平明显降低,34例同位素骨显像检查放射性浓聚显著降低。
A densimeter with radioactive isotope for teaching 一种适合于教学的放射性同位素密度计
In order to study the characteristics of dipeptide transport kinetics in small intestinal brush border membrane vesicles ( BBMV) of piglets, radioactive isotope trace and in vitro incubation technique were used to observe the transmembrane transport of Gly-Pro under different condition. 为研究二肽在仔猪小肠刷状缘膜囊(Brushbordermembranevesicles,BBMV)中跨膜转运的动力学特点,采用同位素示踪及体外孵育技术,观察了几种不同条件下Gly-Pro的跨膜转运量。
Put radioactive isotope~ ( 131) I ( In the form of NaI) in boreholes and mark the karst water evenly. 在钻孔中用放射性同位素~(131)I(以碘化钠的形式存在)均匀标记地下水。
Automatic dilution and division system of radioactive isotope 放射性同位素自动稀释和分源系统
This paper, on the basis of brief stating on Fengcheng-geology of leping silicious rock belt, geohydrology and geology survey, emphatically sums up the characteristics of radioactivity water abnormality and radioactive isotope of abnormal water in this belt. 本文在简要阐述丰城-乐平硅质岩带地质、水文地质概况的基础上,着重总结了该带放射性水异常特征及异常水的放射性同位素特征。
Contents of Ta in slag and iron were measured by means of radioactive isotope~ ( 132) Ta. 渣铁中钽的测定是应用放射性同位素~(182)Ta完成的。
Principle of application and essential points of environmental radioactive isotope tritium in water resource development 环境放射性同位素氚在水资源开发中的应用原理和要点
Study of Binding Mechanism between Endogenous and Exogenous Cadmium and Chromium with Hair by Means of Radioactive Isotope Labelling 利用放射性核素示踪技术对镉及铬与毛发结合机制的研究
Research on the measurement of aircraft fuel density with radioactive isotope gamma rays 利用放射性同位素γ射线测量飞机燃油密度的方法研究
Tritium is widely used in nuclear industries. As a gaseous radioactive isotope, the tritium should be controlled carefully. 氚在核能领域有着广泛的应用,但其作为放射性氢同位素,在使用过程中必须严格控制。