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| 补偿; 略向后退 | |||
| 倒转后松扣; 解卡 | |||
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backoff angle : 26 phrases in 7 subjects |
| Computer networks | 3 |
| Drilling | 4 |
| Electronics | 2 |
| General | 1 |
| Information technology | 6 |
| Oil / petroleum | 6 |
| Space | 4 |
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