Helmholtz resonator has a simple configuration, but it has a good noise eliminating performance at low frequency.So it hs been widely used on the engine intake and exhaust noise reduction.是什么意思_Helmholtz resonator has a simple configuration, but it has a good noise eliminating performance at low frequency.So it hs been widely used on the engine intake and exhaust noise reduction.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句