釷土 的英文怎麼說
中文拼音 [tǔtǔ]-
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。Determination of total rare earth and thorium oxide content
稀土和釷總量的測定Methods for chemical analysis of rare earth chloride and carbonate - determination of thorium oxide content
氯化稀土碳酸稀土化學分析方法氧化釷量的測定Methods for chemical analysis of thorium nitrate - determination of total rare earth content
硝酸釷化學分析方法稀土總量的測定Chemical analysis methods for non - rare earth impurities of rare earth metals and their oxides - determination of thorium content - arsenazo iii spectrophotometric method and inductively coupled plasma mass spectrum method
稀土金屬及其氧化物中非稀土雜質化學分析方法釷量的測定偶氮胂iii分光光度法和電感耦合等離子體質譜法Standard test method for analysis of uranium and thorium in soils by energy dispersive x - ray fluorescence spectroscopy
用能量色散x射線熒光光譜法分析土壤中鈾和釷的標準試驗方法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。分享友人