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Naturally Occurring Radioactive Material
查词链接:
https://www.dute.org/dict/naturally_occurring_radioactive_material
复制链接 天然放射性物质:指在自然界中存在的、具有放射性的元素、同位素和它们的衰变产物,如铀、钍、钾等。
查看英英释义
abstract:
Naturally Occurring Radioactive Materials (NORM) and Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM) consist of materials, usually industrial wastes or by-products enriched with radioactive elements found in the environment, such as uranium, thorium and potassium and any of their decay products, such as radium and radon. These natural radioactive elements are present in very low concentrations in earth's crust and are brought to the surface through human activities such as oil and gas exploration or mining and through natural processes like leakage of radon gas to the atmosphere or through dissolution in ground water.
网络释义
射性物质
...附近曾经进行过石油天然气布拉万登陆上海勘测,因此可能会出现天然存在的放射性物质(naturally occurring radioactive material)。州环境质量局说,巨坑中的水样显升降椅爆炸原因示,其表面有石油和柴油,但初步测试没有发现放射性物质。
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