peen

peenpeenD.J.:[pi:n]K.K.:[pin]n.1.■锤的尖头vt.1.■敲击,打平

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peen[pi:n]n.1.■(锤的)尖头，锤顶vt.1.■(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。2.■【冶金学】喷丸(硬化)处理

peenpeen[pi:n]n.1.■锤尖, 锤顶

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词性变化peen[pi:n]vt.1.■用锤尖敲打[弯、拔、打平]peen hardening弹射硬化, 锺击硬化peen plating(金属粉末)打散渗镀法