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Article
Open AccessHigh lake levels on Alxa Plateau during the Late Quaternary
Field investigations including lake shoreline measurement and 14C chronology have been carried out on the Alxa Plateau to better understand the formation and evolution of the high lake levels in northwest China d...
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Article
Research on ball bearing model based on local defects
This paper presents a nonlinear dynamic analysis model of ball bearing with local defects, and the mechanism of vibration caused by defects on the outer race, inner race and ball of the bearing is analyzed. Th...