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| 极坐标图 | |||
| 极坐标图 | |||
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polar diagram : 14 phrases in 7 subjects |
| Air defense | 3 |
| General | 1 |
| Mathematics | 3 |
| Nautical | 1 |
| Shipbuilding | 1 |
| Technology | 4 |
| Telecommunications | 1 |
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