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| 水泥塞; 打水泥塞; 注水泥用胶塞 | |||
| 注水泥胶塞 | |||
| 灌浆胶结塞; 注水泥用塞 | |||
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cementing plug : 16 phrases in 3 subjects |
| Drilling | 3 |
| Oil / petroleum | 7 |
| Technology | 6 |
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