After peening for 120 minutes,the depth was over 80 micron and grainsize was fined to about 20 nanometers from micron size.是什么意思_After peening for 120 minutes,the depth was over 80 micron and grainsize was fined to about 20 nanometers from micron size.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句