详细解释:n. 氢
【化】 氢H-2
【医】 氢(1号元素)
词型变化：
形容词:hydrogenous简写符号:H英语解释：
名词 hydrogen:
a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe同义词：H, atomic number 1