oxygen contamination造句

例句与造句

1. We have five minutes before oxygen contamination ,
   在氧化反应起作用之前我们还有5分钟时间
2. Development in research on electrochemical reaction resulting in oxygen contamination by slag in submerged arc welding process
   熔渣对焊接过程电化学致氧研究进展
3. It's difficult to find oxygen contamination in a sentence. 用oxygen contamination造句挺难的