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GB/T 24604-2021滚动轴承机床丝杠用推力角接触球轴承及单元Rolling bearings－Angular contact thrust ball bearing...2022-10-25

GB/T 24604-2009滚动轴承.机床丝杠用推力角接触球轴承Rolling bearings—Angular contact thrust ball bearings use...2022-06-09