Read Edit View history 鏷 pú protactinium Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 镤/鏷 · pú · protactinium 2026/03/04 镤 / 鏷 pú protactinium protactinium (chemistry) 镤是一种具有放射性的金属元素。 punctuation created sense Mar 4, 2026, 02:25 AM