通过实验研究着重分析了板壳零件的尺寸误差、表面粗糙度及装配精度等对机械结构的振动、噪声的影响，并得出了一些具有实际价值的结论。 Through experimental study, the influence of the dimension error, the surface roughness and the assembly accuracy of the plate and shell parts on the vibration and noise of the mechanical structure are emphatically analyzed, and some conclusions are obtained with practical value.