Ephraim Fischbach, a physics professor at Purdue, was looking into the rate of radioactive decay of several isotopes as a possible source of random numbers generated without any human input.
普渡大学物理教授EphraimFischbach，将探测几种同位素的放射性衰变速率的方法作为一种没有人为输入因素干扰的产生随机数的可能方法。
Unbeknown to them, the "scrap" contained a highly radioactive source used to treat cancer patients.
他们不知道这件“废品”里有一个用于治疗癌症患者的高辐射源。
Any missions hoping to go farther will need a means of acceleration that can get the spacecraft to the edge of explored space faster—before it has depleted its radioactive power source.
故而，任何更深空的宇宙探索都需要寻找技术途径来加速航天器，以便在放射性能源耗尽之前到达星系边缘。
Its sediments remain highly contaminated and tainted floodplain soils that wash up during storms and floods have now become a source of radioactive materials.
河流的沉淀物中含有大量的放射性物质，这些放射性物质被暴风雨或洪水冲上河滩，使那里的土壤成为放射性污染源之一。
Through measuring the radiation quantity around surroundings where radioactive source is placed, it estimates the status of radioactive source automatically, and gives an alarm of light and sound.
仪器通过实时监测放射性源对周围环境的辐射量来判断放射性源所处的状态，并能自动予以声、光报警。
The content of radioactive radium in mineral was 19 times higer than that in rock and served as a chief source of radon.
矿石样品放射性镭含量比岩石样品高19倍，为井下氡气的主要来源；
Here in this paper the research and test works on radioactive source strong magnetic die were introduced.
文章介绍了放射性源强磁打捞器的研制和试验。
This paper introduces the advantages of ISOCS measurement method by efficiency calibration without a radioactive source, comparing with traditional measurement methods of environment samples.
以比较的方法，介绍了ISO CS系统无源刻度测量方法相对于传统环境样品放射性测量方法的优点。
The installation of level gauge used for urea stripping tower, the structure and forming of radioactive rod source, and the calculation of its approximate linear graduation are described.
介绍了尿素汽提塔液位计的安装方式、棒状源的结构、源的组合形式，及近似线性刻度计算。
The influence of radioactive source decay on measuring error of the isotope instruments is analysed. The valuable conclusion for designing the circuit of instrument is obtained.
分析了采用不同率表电路的同位素仪表因放射源的衰减而对仪表测量误差的影响，得出了对仪表电路设计有参考价值的结论。
The concept of heat threshold is brought forward for the melting process of radioactive source with constant heat rate.
针对恒释热率热源接触熔化，提出了热量阈值的概念。
The theoretical and practical feasibility has been confirmed from the test results of comparing the imported radioactive rod source to the developed radioactive rod source.
实际使用的进口棒状源和研制成功的棒状源实测结果比较，证实理论与实践的可行性。
Radioactive source management is one of the key activities for a nuclear power plant to maintain its good safety record and image to the public.
放射源的管理也是核电站或核企业维持其良好安全记录和社会形象的一项重要工作。
Indeed the use of an electron beam or X-rays FOR irradiation overcomes the need FOR a radioactive source altogether.
用电子束或X -射线进行辐照确实完全解除了对某种放射源的需要。
By using the seismic source model of crack containing hyperpressure gas, the course of radioactive heat energy in the earth to accumulate in the focal area and cause for earthquake are studied.
根据含超压气体裂隙震源模式，分析了地球内部放射热能向孕震区积聚的过程。
A radioactive source is used to bombard the rocks surrounding the wellbore with gamma rays. By counting the backscattered gamma rays, the density of the subsurface rock can be computed.
利用放射性源的伽马射线轰击井眼周围的岩石，通过对反散射伽马射线计数，可以计算出地下岩石的密度。
The utility model is convenient, quick and precise to use and can indicate the correction of the action spot of the radioactive source and the laser positioning.
它是一种放射线的空间定位标准量具，使用方便，快捷，准确，并且可以对放射源的工作点和激光定位指示其进行校正。
Both ends of the radioactive stent with appearance of column mesh is in smooth bell-mounted shape, and a radioactive source is plated or welded in a side area of the stent back end.
本实用新型所提供的放射性支架，呈柱形网状，支架的两端呈平滑喇叭口形，在支架尾端的一侧区域镀或焊有放射源。
This kind of nucleon weighing apparatus has complete functions, low activity of radioactive source, strong environmental adaptability and steady performance.
这种核子秤具有功能全、放射源活度小、价格低、环境温度适应性强、性能稳定等优点。
This kind of nucleon weighing apparatus has complete functions, low activity of radioactive source, strong environmental adaptability and steady performance.
这种核子秤具有功能全、放射源活度小、价格低、环境温度适应性强、性能稳定等优点。
应用推荐