The principle and the apparatus of hydrogen reduction of metal oxides are described.
叙述了氢气还原金属氧化物的过程、装置和工艺过程。
It will also combine with oxygen to form oxides of nitrogen and, when combined with hydrogen in the presence of catalysts, will form ammonia.
它还会同氧反应生成氮的氧化物，而且当在有催化剂存在时它会同氢反应生成氨。
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