etching problem

• 腐蚀问题

etching problem的用法和样例：

例句

1. The corrosion problem is less in regenerative plants since the heating surface is provided by stones.
   在蓄冷器工厂中，因为加热表面是石头提供的，所以腐蚀问题较少。
2. Corrosion becomes a key problem that hinders the extensive applications of magnesium alloys.
   镁合金的腐蚀问题是制约镁合金应用的主要瓶颈因素。