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| 不停产修理 | |||
| 带压开孔机 | |||
| 带气连接; 铁板热焊 | |||
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| 不停产检修; 管线木停产打孔 | |||
| hot tapping: 9 phrases in 2 subjects |
| Metallurgy | 8 |
| Shipbuilding | 1 |
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