... background， natural radioactivity 天然放射性背景 radioactivity background 放射性本底 natural radioactivity background 天然放射性本底 ..
基于46个网页-相关网页
natural radioactivity background 天然放射性本底
environmental radioactivity background 环境辐射本底
background radioactivity 放射性背景
natural background radioactivity 天然本底放射性
background natural radioactivity 天然放射性背景
radioactivity tool-background 放射性仪器本底值
The results show that the radioactivity level of varied water bod-ies of the city was within normal natural background.
调查结果表明，上海市各类水体中天然放射性核素浓度属正常本底水平。
The results showed that the radioactivity levels of each nuclide in Yangtze River water system were still lower than that of background, and did not cause contamination.
结果表明，各核素均未对长江造成污染，长江水系放射性浓度仍在本底水平。
The results show that the radioactivity level of varied water bodies of the region was within normal natural background.
调查结果表明，宁夏回族自治区水体中天然放射性核素浓度属正常本底水平。
应用推荐