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| 螺旋天线 | |||
| 螺线天线 | |||
| 螺旋形天线 | |||
| spiral antenna: 10 phrases in 5 subjects |
| Air defense | 3 |
| Aviation | 1 |
| Oil / petroleum | 1 |
| Space | 4 |
| Technology | 1 |
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