Based on the theory of flow duct aoustics,simulating model of a muffler is established by using the AVL BOOST,and improved design of the exhaust muffler of a car is implemented.是什么意思_Based on the theory of flow duct aoustics,simulating model of a muffler is established by using the AVL BOOST,and improved design of the exhaust muffler of a car is implemented.在线翻译_英语_读音_用法_例句