peen[pi:n]

• n.
  • (锤的)尖头，锤顶
• vt.
  • (用锤尖)敲打；打平；拔；弯：

    Great improvement has been brought about in the service life of springs by hot peening.

    用锤头连续敲打金属表面的方法大大地延长了弹簧的使用寿命。

  • 【冶金学】喷丸(硬化)处理