高氧气体（Nitrox，亦称Enriched Air），是指以空气为基础、氧浓度高于21%的潜水用呼吸气体。借由把气瓶中的氧浓度增加、氮浓度减少，潜水员会减少吸入体内的氮气，从而在同样的潜水深度时可以延长其免减压极限。
因为氢气是高可燃气体，当足够多的氢气进入空气中，它就会跟其中的氧气反应。
Since hydrogen gas is extremely combustible, when enough hydrogen gas is mixed with air, it reacts with oxygen. If there is enough hydrogen gas, it will react rapidly, producing an explosion.
脱氧剂用于脱除气体中的微量氧气以提供含氧量极微的高纯气体。
Deoxygenate was used to remove the remanent oxygen from gas for supplying the high purity gas.
有机硅橡胶一直以来都用来做燃料电池的密封材料，但有机硅透气性高，不适合氢气、 氧气等高透过性气体的密封。
The silicone rubber has been used as the sealing material of fuel cell, but the material has high permeability to hydrogen and oxygen.
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