oxide skin

• 氧化皮

oxide skin的用法和样例：

例句

1. How can you get rid of this oxide coating?
   你们该怎样除去这些氧化皮？
2. A study on the acid cleaning process of the oxide skin on carbon steel has been made with potential tracing.
   采用电位跟踪法研究碳钢氧化皮的酸洗过程。