hydrogenite氢发生剂
hydrogenn.氢
hydrogen determinator氢气测定器
hydrogen gas transfer氢气输送
hydrogen tetrasulfide四硫化二氢
hydrogen distribution氢分布
hydrogen pretreatment氢预处理
hydrogen sulfide test硫化氢检测
hydrogenated residuum加氢后残渣
hydrogen reduced iron氢还原铁粉
hydrogen atom spectra能级
hydrogen transference氢转移