| 氧 | oxygen (chemistry) |
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| 氧不足 | hypoxia; oxygen lack; anoxia; oxygen deficit |
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| 氧乙炔 | oxyacetylene |
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| 氧乙炔切割法 | [Mechanics] oxyacetylene metal-cutting |
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| 氧乙炔吹管 | oxyacetylene blowpipe |
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| 氧乙炔炬 | an oxyacetylene torch |
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| 氧乙炔焊 | oxyacetylene welding |
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| 氧乙炔焊炬 | oxyacetylene torch |
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| 氧割 | to cut using oxyacetylene torch |
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| 氧化 | oxidize |
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| 氧化-还原 | OR; oxidation-reduction |
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| 氧化亚氮 | [Chemistry] nitrous oxide; laughing gas; nitrogen monoxide |
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| 氧化亚铁 | iron protoxide; ferrous iron oxide; ferrous oxide |
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| 氧化作用 | oxygenizement; oxidizing action; oxidation; oxidization |
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| 氧化剂 | oxidant
oxidizing agent
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| 氧化层 | oxide layer; oxidizing layer; layer of oxide; zone of oxidation; oxidative horizon; oxic horizon |
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| 氧化态 | oxidation state |
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| 氧化抑制剂 | oxidation inhibitor; oxidation retarder |
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| 氧化数 | oxidation number |
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| 氧化氮 | nitrogen oxide; nitrogen oxides; nitric oxide |
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