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yǎng huà de zuò yòng
氧化的作用
oxidation
yǎng huà de guò chéng
氧化的过程
oxidation process
yǎng huà gè
氧化铬
chromium
yǎng huà yóu
氧化油
oxygenated oil
yǎng huà de fǎn yìng
氧化的反应
oxidation reaction
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