滚动轴承 密封深沟球轴承 防尘、漏脂、温升性能试验规程滚动轴承 密封深沟球轴承 防尘、漏脂、温升性能试验规程Rolling bearings--Sealed deep grove ball bearings--Performance test rule of dusproofing,grease leakage and temperature rise
滚动轴承 密封深沟球轴承 防尘、漏脂及温升性能试验规程
Rolling bearings—Sealed deep groove ball bearings—
Performance test rule of dustproofing,grease leakage and temperature rise