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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。
- It's only human nature to want a comfortable life. 想过舒适的生活不过是普通人的本性。
- 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。
- All nature seemed pregnant with life. 整个大自然似乎充满了活力。
- He knows nothing of the nature of my work. 他一点也不了解我的工作性质。
- The girl is of a confiding nature. 这女孩具有轻信别人的性格。
- 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。
- We enjoyed the beauty of nature. 我们欣赏大自然的美。
- Perhaps it is our human nature to be nostalgic. 也许是人类天生有一种思古之幽情。
- She had an eye for the beauty of nature. 她有鉴赏自然美的眼力。
- She hasn't much feeling for the beauty of nature. 她对大自然的美缺少鉴赏力。
- Her sad looks reflected the nature of her thoughts. 她面带忧伤显出心事重重。
- It is one of the strangest things in nature. 那可真是奇怪的东西之一。
