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| back azimuth; opposite angle | |||
| back angle | |||
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反向角 : 19 phrases in 8 subjects |
| Compressors | 1 |
| Electronics | 3 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 1 |
| Metallurgy | 1 |
| Securities | 1 |
| Table tennis | 2 |
| Technology | 8 |
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