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| 间隔轴环; 间隔垫圈; 隔〔定距〕环; 间隔环套，垫圈 | |||
| 定距轴环 | |||
| 定距环; 间隔圈 | |||
| 垫圈 | |||
| 隔环 | |||
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distance collar : 2 phrases in 2 subjects |
| Chemistry | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
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