radioactive-tracer method

By this method, the spatiotemporal distribution of radioactive nuclides in atmosphere in different terrain characteristics, different weather situations for instantaneous or continuous leaking source were obtained, and the dry or wet deposition quantities on the ground were also acquired.

该方法可计算核事故中连续点源和瞬时点源在不同气象、地形条件下的浓度分布，并可获得地面的干沉积率和湿沉积率。

Using coincidence method, transit time spread ( TTS) is measured with Cherenkov light produced by cascade γ radioactive source, 60Co on photocathode window of photomultiplier tube ( PMT).

采用符合方法，测量级联γ放射源60Co在光电倍增管（PMT）光阴极窗上激发产生的切伦科夫光，从而测定PMT渡越时间涨落。

An Improvement on Surveying Instrument and Method of Radioactive Gas in Environment

环境放射性气体测量装置与方法的改进

Borehole radar survey proves to be an effective method to detect the fracture extension and rock integration of granite, and is of important significance in site characterization for high-level radioactive waste repository.

北山1号孔钻孔雷达测试的实践表明：钻孔雷达测量是了解岩体内部裂隙延伸和岩体完整性的有效手段，对高放废物处置库场址评价有重要意义。

Mind Mapping is a concrete reflection of the radioactive method.

思维导图就是一种将放射性思考具体化的方法。