Read Edit View history 钍 tǔ thorium Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 钍/釷 · tǔ · thorium 2026/03/04 钍 / 釷 tǔ thorium thorium (chemistry) 钍是一种放射性金属元素。 punctuation created sense Mar 4, 2026, 02:25 AM