铟钢 yīngāng invar Origin Definitions Defs Strokes Stroke Words Sentences Sents 铟 銦 yīn indium the chemical element indium (In); a soft, silver-white metal often used in alloys or the electronics industry钢 鋼 gāng noun steel steel; an alloy of iron and carbon that is tougher than cast iron and harder than wrought iron