rindexradiothorium./rey-dee-oh-thawr-ee-uhm, -thohr-/US // ˌreɪ di oʊˈθɔr i əm, -ˈθoʊr- //放射科,镭射馆,放射线室,放射性的食物Definitionsn.noun · 名词1. Chemistry.›a disintegration product of thorium. Level 5More words in r →