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| 反向散射的 | |||
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backscattered : 19 phrases in 8 subjects |
| Air defense | 1 |
| Communications | 1 |
| Earth sciences | 1 |
| Ecology | 2 |
| Electronics | 8 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 2 |
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