预氧化 meaning in Chinese

pre-oxidation

Gear pre - oxidation gas carburizing at low temperatrue
齿轮预氧化低温气体渗碳
Preoxidation of kovar alloy for hermetic sealing
可伐合金气密封接的预氧化
A study on antimony precipitation from sodium thioantimonite by air oxidization
难处理金矿的球团包衣焙烧预氧化法研究
Ozonation of coal gasification wastewater on the efficiency of effluent treatment
臭氧预氧化对煤气废水生物处理出水功效的研究
Biooxidation pretreatment technology for refractory gold ores and its commercial application
难处理金矿的生物预氧化技术及工业应用

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