radioactive thorium 中文意思是什麼
radioactive thorium
解釋
放射性釷- radioactive : adj. 【物理學】放射性（引起）的。n. -activity 放射性；放射（現象）。
- thorium : n. 【化學】釷。
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It is important that study gamma - ray spectrometry of field rock and soil in the earth ' s crust. its energies range between 30kev and 3000kev, where there is much information of natural radioactive nuclides, such as uranium, thorium, potassium, and information of artificial radioactive nuclides, such as cesium, americium, cobalt, and information of the results in interaction between gamma - ray and earth ' s crust
研究表明：野外地面射線能譜測量主要研究地殼巖石土壤中產生的能量約為30kev 3000kev的射線，這裡面包含著鈾、釷、鉀等天然放射性核素信息，核工程活動產生的大量人工放射性核素信息以及射線與地殼相互作用產生的相關信息。 -
Regulations for safe management of radioactive wastes from the mining and milling of uranium and thorium ores
鈾釷礦冶放射性廢物安全管理技術規定 -
Examination of radioactive materials for foods - determination of natural thorium and uranium
天然釷和鈾的測定 -
Even without these man made sources of radiation, exposed to natural background radiation. the rocks and soil of the earth s crust contain variable amounts of natural radioactive elements such as uranium and thorium. this varies with geography - for example the hottest places in britain are cornwall and around aberdeen
就算排除人為輻射，人類會在天然環境中接觸到本底輻射，如地球外殼的巖石和泥土含有份量不同的輻射元素如鈾和釷，而份量視乎地理位置，如英國的康瓦爾和阿伯丁郡最為熱點。
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