Read Edit View history 铌 ní niobium Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 铌/鈮 · ní · niobium 2026/03/04 铌 / 鈮 ní niobium niobium (chemistry) 铌是一种具有延展性的银灰色过渡金属。 punctuation created sense Mar 4, 2026, 02:25 AM