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| 管子操作; 管子装卸 | |||
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| 装卸管子 | |||
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pipe-handling : 18 phrases in 7 subjects |
| Agriculture | 1 |
| Architecture | 1 |
| Drilling | 7 |
| Earth sciences | 1 |
| Mechanics | 1 |
| Oil / petroleum | 3 |
| Technology | 4 |
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