In excess oxygen , the reaction was first order in hydrogen and zero order in oxygen.
反应混合气体中氧气含量大大过量，反应对氧气浓度的影响可以忽略。
Oxygen concentrations in excess of 23% increase the hazard exposure to personnel and material.
氧浓度超过23%增加了暴露于其中的人员和材料的危险。
Oxygen concentrations in excess of 23% increase the hazard exposure to personnel and material.
氧浓度超过23%增加了暴露于其中的人员和材料的危险。
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