hydrogen-oxygen fuel cell
combined hydrogen 化合氢
light hydrogen 轻氢，氕
hydrogen attack 氢脆，氢侵蚀，氢蚀
hydrogen bacteria 氢细菌
hydrogen bond 氢键
hydrogen brittleness 氢脆，氢脆性，氢蚀脆性
hydrogen coolant 氢冷却剂
hydrogen engine 氢气发动机，液氢发动机
hydrogen halide 卤化氢
hydrogen line 氢线
