1. ball and roller bearing 
   滚动轴承
2. the tissue forming the outer covering of a fur-bearing animal. 
   构成皮毛动物外表的组织。
3. A steel tube or wooden roller on which the warp is wound in a loom. 
   卷轴织机上的铁管或木轮，供经线缠绕之用
4. Prevention of an Arms Race in Outer Space  
   防止外空军备竞赛
5. There is rust spot on some of the roller. 
   有些滚筒上有锈斑。

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• 1. 螺旋滚柱轴承拼合外座圈
  (402)split outer race of the wound roller bearing {}螺旋滚柱轴承拼合外座圈
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• 2. 螺旋槽纹辊
  螺旋槽纹辊 spirrollerly grooved roller...螺旋槽纹辊 split outer race of the wound roller bearing...螺旋滚柱轴承拼合外座圈 spring roller
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