2026-01-13 00:02:07 浏览次

gunpowder是什么意思 英[ˈɡʌnpaʊdə(r)] 美[ˈɡʌnpaʊdər] n. 火药[化] 有烟火药; 火药n. a mixture of potassium nitrate, charcoal, and sulfur in a 75:15:10 ratio which is used in gunnery, time fuses,...