... 自然伽马下井仪：GRT 自然伽马射线谱：natural gamma-ray spectrum 自然伽马射线：natural gamma rays ...
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The radioactivity variation of the shallow part of Yellow River delta with the natural gamma ray spectrum logging from 16 Wells is studied.
通过16口浅层自然伽马能谱测井资料分析黄河三角洲浅层放射性的区域变化状况。
The original spectrum from the soil is simulated by MCNP and the experiment of influence to natural gamma-ray is done.
采用MCNP模拟软件和水分对天然伽玛射线的影响实验，对不同水分土壤中铀系和钍系天然伽玛的原始谱进行了模拟运算。
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