etch pit

• n. 腐蚀坑(腐蚀陷斑)

etch pit的用法和样例：

例句

用作名词 (n.)

1. In this paper,the influence of orifice-induced pressure head on pit corroded piping is studied.
   研究了节流孔板引起的压差对含腐蚀坑点的管道系统的影响。