Read Edit View history 鉕 pǒ promethium bronze Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 钷/鉕 · pǒ · promethium 2026/03/04 钷 / 鉕 pǒ promethium promethium (chemistry) 钷是一种具有放射性的稀土元素。 punctuation created sense Mar 4, 2026, 02:25 AM