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| 间隔圈环; 隔套环; 滚动轴承保持架; 隔离器 | |||
| 隔环 | |||
| 垫圈 | |||
| 定距环; 隔离环 | |||
| 隔圈 | |||
| 间距环; 隔〔垫〕环 | |||
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distance ring : 3 phrases in 1 subject |
| Technology | 3 |
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