and lastly, a pulse wide modulation amplifier is used as the output stage of the servo - system.After studying the system and doing some tests, the expected results have been obta...是什么意思_and lastly, a pulse wide modulation amplifier is used as the output stage of the servo - system.After studying the system and doing some tests, the expected results have been obta...在线翻译_英语_读音_用法_例句