 |
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| 扇形〔扇区，区域〕扫描; 扇形〔扇区〕扫掠 | |||
| 扇扫 | |||
| 区域扫描; 扇区扫描; 扇形扫描 | |||
| 区域扫掠扇形搜索 | |||
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| 扇形扫探; 区域扫描 | |||
| 扇形扫描［搜索］ | |||
| 区域扫掠扇形搜索 | |||
| 扇形扫描; 扇形搜索 | |||
| sector scanning: 33 phrases in 9 subjects |
| Air defense | 10 |
| Aviation | 2 |
| Electronics | 3 |
| Fishery fishing industry | 1 |
| Geology | 1 |
| Nursing | 2 |
| Oil / petroleum | 1 |
| Space | 5 |
| Technology | 8 |