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This paper introduces the advantages of ISOCS measurement method by efficiency calibration without a radioactive source , comparing with traditional measurement methods of environment samples.

ISOCS系统[1](In-SituObjectCountSystem)是由美国Canberra公司开发的现场物体计数系统，它能够在放射性剂量产生地，现场条件下直接进行γ能谱测量和分析。

A unit strength of a radioactive source equal to one million disintegrations per second .

放射性强度单位等于每秒百万次数衰变。

A sort of silicon diodes were irradiated by electron beam and 63Ni radioactive source, and their electrical capabilities were measured during the irradiation.

本工作采用加速器产生的不同能量电子束和63Ni源的β射线对硅基PiN结型器件进行辐照，在线测量了其电学输出性能。

Monitoring scope was divided to 3 zones including radioactive source, operating and denuded, all monitoring results were recorded and archived.

将监测范围划分放射源区、操作区和清洁区共3个区，监测结果记录存档。

A novel isotopic mould measurement system for molten steel level,composed of a radioactive source,a nuclear detector and a signal processing unit,is presented.

同位素检测是恶劣环境下测量液位的主要方法，本文介绍一种新型结晶器钢水液位测量系统，系统由放射源、核辐射探测器和信号处理单元组成。

Ray pinhole imaging system is a major approach to diagnose the radioactive source.

γ射线针孔照相系统是用于诊断γ射线源或X射线源图像的重要手段，它主要由厚针孔、闪烁体、微通道板像增强器和CCD相机等器件组成。

The detection efficiency was also obtained experimentally using radioactive source 60Co.

测出的线衰减系数是绝对值，成像只要求低分辨。然而，TGS有CT测量所没有的发射测量和图像重建的问题。

Radioactive waste management is a serious problem in the world.

放射性废物管理是当今世界面临的一个重要问题。

No one has solved the problem of what to do with radioactive waste.

还没有人解决如何处理放射性废料的问题。

Now,however,all radioactive waste must be stored on land.

然而，现在所有放射性废物必须被贮藏在陆地了。

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。