硫化氢hydrogen sulphide
氰化氢hydrogen cyanide
电解水制氢设备water-electrolytic hydrogen making equipment
双氧水HYDROGEN PEROXIDE 50%,
硫化氢试验hydrogen sulfide production test
硫化氢浴hydrogen sulfide bath, hydrothion bath
初生氢nascent hydrogen
【化】 砷酸氢二钠sodium hydrogen arseniate