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| spiral scan (一种雷达扫描方式。雷达波束在垂直面内沿螺旋状路线从中线离开再回到中线。这种方式适用于目标捕获雷达，提供目标的距离、相对方位角与仰角数据) | |||
| helical scan | |||
| spiral scan | |||
| helical scanning | |||
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| helical scan | |||
| 螺 旋 扫描: 17 phrases in 10 subjects |
| Agriculture | 1 |
| Air defense | 5 |
| Aviation | 1 |
| Electronics | 1 |
| Mechanics | 1 |
| Multimedia | 1 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 3 |
| Telecommunications | 1 |
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