By means of analyzing the structure of gearbox,points out the problems existed in usage and maintenance of gearbox and puts forward the correct method for use and maintenance.是什么意思_By means of analyzing the structure of gearbox,points out the problems existed in usage and maintenance of gearbox and puts forward the correct method for use and maintenance.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句