GB/T 39644-2021滑动轴承旋转机械用锡基合金轴承技术条件标准
英文:Plain bearings—Technical specifications for Tin-based alloy plain bearings of rotating machinery GB/T 39644-2021介绍: 国...
英文:Plain bearings—Technical specifications for Tin-based alloy plain bearings of rotating machinery GB/T 39644-2021介绍: 国...