automatic denting

例句：

1. 1.The steel plate has been subjected to automaticdenting by the corrosive acid.
   这块钢板已经被腐蚀性酸侵蚀了。
2. 2. Themachine's automatic denting system isdesigned to prevent damage to delicate parts.
   机器的自动磨损系统设计用来防止对精细部件的损害。
3. 3. The researcher foundthat the material had a tendency to undergoautomatic denting in certain conditions.
   研究者发现，在特定条件下，这种材料容易发生自动磨损。