复数：H's 复数：Hs
1.[c][u]英语字母表的第 8 个字母the 8th letter of the English alphabet
1.英语字母表的第八个字母
2.H形物
3.【化,物,电】同“hydrogen”;= hard(ness); 〔俚语〕heroin
4.【化】同“protium. H”
1.the eighth letter of the English alphabet. H is a consonant.
1.[Chemistry,Physics,Electricity]Same as hydrogen
2.[Chemistry]Same as protium. H
！，H！，H！，H