基本解释放射性探测英汉例句双语例句To resolve the problem, it is necessary to ascertain the origin of radioactivity with geological prospecting as the first step.要从源头上解决建材放射性超标的问题，必须查清其中放射性的来源，并从地质勘查抓起。radioactivity prospecting更多例句词组短语短语prospecting radioactivity 放射性探勘radioactivity prospecting更多词组专业释义地球科学放射性勘探放射能探勘