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| 密封系统; 气封系统 | |||
| 布边熔结装置 | |||
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sealing system : 13 phrases in 6 subjects |
| Automobiles | 1 |
| Metallurgy | 2 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 7 |
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