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本文分析了人造花岗岩材料的阻尼机理，对ＭＧ１４２０Ａ型外圆磨床人造花岗岩床身和铸铁床身的动态性能进行了对比，介绍了一种较新颖的动态试验方法和装置。
In this paper, the damping mechanism of artificial granite material is analyzed, the dynamic performance of MG1420A cylindrical grinder man-made granite bed and cast iron bed is compared, and a new and more dynamic test method and device are introduced.