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| 油〔气〕井水力压裂 | |||
| 油气井压裂 | |||
| 油层水力压裂; 钻井水力压裂; 井围扩碎法 | |||
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well fracturing : 3 phrases in 2 subjects |
| Oil / petroleum | 2 |
| Technology | 1 |
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