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| 后方交会; 反交会 | |||
| 后方交会法 | |||
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обратная засечка : 15 phrases in 6 subjects |
| Cartography | 5 |
| General | 2 |
| Geology | 2 |
| Measuring instruments | 1 |
| Military | 2 |
| Technology | 3 |
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