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关注:1
2013-05-23 12:21
求翻译:if it is a cylindrical roller it is called a cylindrical roller bearings of the N, NU, BF and NJ series是什么意思?![]() ![]() if it is a cylindrical roller it is called a cylindrical roller bearings of the N, NU, BF and NJ series
问题补充: |
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