Aiming at the problem of the low discharge pressure and unsatisfying air displacement of compressors,the material property and structure of piston ring is remoulded.是什么意思_Aiming at the problem of the low discharge pressure and unsatisfying air displacement of compressors,the material property and structure of piston ring is remoulded.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句