1)radioactive sorting,放射性选矿2)concentration of ore by artificial radioactivity,人工放射性选矿3)radiometric sorting,放射性分选4)radioactive coal preparation,放射性选煤5)radioactive occurrence,放射性矿床6)radioactive mineral spring,放射性矿泉
用法例句
Uranium ore radiometric sorting was established in 1940s century.