论文部分内容阅读
０５６东京及其周围地下水中氡含量的分布［日］／藤正明…Ｒａｄｉｏｉｓｏｔｏｐｅｓ。－１９９３，４２（５）．－２７３氡（２２２Ｒｎ）是地层中岩石表面镭（２２６Ｒａ）释放出来的、是具有放射性的惰性气体，释放出氡的量与岩石的粒度、间隙率以及母体核素镭的含量...
056 Distribution of radon in groundwater in Tokyo and its surroundings [Japan] / Fujimoto ... Radioisotopes. -1993,42 (5). -273 Radon (222Rn) is a radioactive noble gas released from rock surface radium (226Ra) in the stratum, releasing the amount of radon and the rock particle size, porosity and ...