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| 防喷器 | |||
| English thesaurus | |||
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| BOP (MichaelBurov) | |||
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| BOP (MichaelBurov) | |||
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blow-out preventer : 14 phrases in 3 subjects |
| Drilling | 4 |
| Oil / petroleum | 3 |
| Technology | 7 |
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