单词：hydrogens
(hydrogen 的复数) n. 氢
[化] 氢H-2
[化] 氢H-2
plural of hydrogen
n. 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
n. 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