After carrying out a theoretical analysis of vibration and sound radiation of mill cylinder, simulation for acoustic field has been preceded by boundary element method.
本文对球磨机筒体的振动和声辐射进行了理论分析，然后结合边界元方法对筒体辐射声场进行了仿真分析。
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Gm also says the mill will be "one of the quietest and most refined engines in the segment" because of an acoustic intake manifold cover and inverted-tooth camshaft chains.