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| choice of polarization | |||
| choice of polarization (一种提高雷达探测能力的技术); polarization selection | |||
| 极化 选择: 8 phrases in 5 subjects |
| Air defense | 1 |
| Electronics | 1 |
| Oil and gas technology | 1 |
| Space | 4 |
| Technology | 1 |
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