1) environmental radon
环境氡
1.
This paper deals with the sources and harmfulness of environmental radon,analyses the geological background of radon in the urban district of Beijing and some basic measures for preventing and reduciang radon,and emphatically points out that indoor radon comes mainy from foundation rock and soil.
论述了环境氡的来源、危害，着重分析了室内氡的主要来源是地基岩石、土壤，分析了北京市区氡的地质背景和防氡与降氡的一些基本措
2.
Based on properites of granites in Qingdao, radioactive elements, structural characteristics, and quantitative determination of atmospheric radon and soil radon, the authors obtained results of soil radon environmental geological investigation, and have reached the conclusion that environmental radon of Qingdao City is at a low level.
本文从青岛花岗岩岩性、放射性元素、构造特征、空气氡和土壤氡浓度定量测定 ,取得了青岛市区 32km2 土壤氡环境地质调查成果 ,得出青岛市环境氡为低水平城市的结
2) environmental pollution of radon
环境氡污染
4) radon gas concentration
氡气环境调查
1.
The results indicate that radon gas concentrations in soils of Quanzhou and Jinjiang urban areas are at a lower level,whereas those in soils of Quanzhou and Jinjiang suburbs are at a fairly high level.
通过泉州市、晋江市土壤中氡气测量,取得约465 km2土壤氡气环境调查成果,从结果来看,泉州市区和晋江市区土壤中氡气浓度普遍较低;市郊主要为山地,土壤中氡气浓度普遍较高;从土壤中氡气浓度水平的分布来看,土壤中氡气浓度水平主要与地质背景有关,二长花岗岩、钾长花岗岩、钾长浅粒岩及黑云片岩风化土壤中氡气浓度明显高于其他地质背景来源土壤。
5) The Research on Radon Apparatus
环境测氡仪的研究
6) radon
[英]['reɪdɔn] [美]['redɑn]
氡
1.
Some Problems in the Action Level and Dose Assesment of Radon;
氡防护标准和剂量评价中值得注意的几个问题
2.
Research on Radon Concentration and Radioactivity Level of Part Coal Mine in Guizhou Province;
贵州省部分煤矿氡浓度及放射性水平的研究
3.
Study on radon concentration measurement in soil;
土壤氡浓度的测量方法现状
补充资料：海洋自然地理环境(见自然地理环境)
海洋自然地理环境(见自然地理环境)
marine physical geographic environment
haiyang ziran dili huaniing海洋自然地理环境(marin。phys、calgeograPhic environment)见自然地理环境。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条