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- How does natural radiation enter our body through the biosphere? 天然放射性物质是怎样经过生物圈进入人体?
- In general, there are two kinds of radiation according to its origin: natural radiation and artificial radiation. 一般来说,辐射按其来源可以分为两大类:天然辐射和人工辐射。
- Natural radiation in the environment comes from two sources: cosmic rays and radiation present in the earth crust. 环境中的天然辐射有两大来源:一个是宇宙射线,另一个是存在于地壳的辐射。
- However, under certain weather conditions, there may be short-term variations of the ambient radiation level in Hong Kong due to natural radiation. 但在某些天气情况下,天然辐射会导致环境辐射水平出现短暂的变化。
- The Estimation of Doses to the Inhabitants Arising from Natural Radiation Source in the High Background Radiation Area of Yangjiang, China. 天然辐射源致阳江高本底辐射地区居民的剂量估算。
- Abstract BACKGROUND & AIM: To study the effect of smoking in different areas with different environmental mutagens including natural radiation. 摘要 背景与目的: 研究包括天然辐射等不同环境诱变因素地区居民的吸烟效应。
- Title: The Estimation of Doses to the Inhabitants Arising from Natural Radiation Source in the High Background Radiation Area of Yangjiang, China. 关键词:天然辐射源;高本底辐射地区;剂量估算;有效剂量;吸收剂量
- CONCLUSION: The effect of smoking seems to be suppressed by the environmental mutagens in Beijing as well as by the elevated level of natural radiation in HBRA. 结论: 外周血淋巴细胞染色体易位的吸烟效应似乎被北京地区的环境诱变因素或高本底地区高出对照地区的天然辐射所抑制。
- Radon and its daughters not only are the decay product of natural radioactive uranium series and thorium series, but also are one of natural radiation source. 氡及其子体是天然放射性系列中的铀系、钍系衰变产生的,是人类受天然辐射主要的来源之一。
- Moreover,the monitoring findings achieved by the environmental protection departments over the years have proved that the natural radiation level in Tibet is within the standards specified by the state's radiation protection regulations. 环境保护部门多年监测结果证实,西藏环境天然放射性水平在国家辐射保护规定标准内。
- ON CONTROL OF NATURAL RADIATION EXPOSURE 对天然照射的控制问题
- On the problem of civil natural radiation 公众的天然本底辐射问题
- NATURAL RADIATION LEVEL IN ANHUI PROVINCE 安徽省天然辐射水平
- It is natural for a cat to catch mice. 猫捉老鼠是本能。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- Our motherland flows with natural resources. 我们祖国蕴藏着丰富的天然资源。
- Events took their natural course. 事态依自然进程发展。
- She has a natural wave in her hair. 她的头发自然卷曲。
- Magnetism is a natural phenomenon. 磁力是一种自然现象。