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visual aural
| radio range
| visual aural | |
| gen. | 视听式; 声影显示的 |
| radio range | |
| avia. | 无线电频率范围 |
| earth.sc. | 无线电测距 |
| space | 无线电频率范围 |
| |||
| 视听式; 声影显示的 | |||
| 视听的; 可见可听的 | |||
| visual aural: 17 phrases in 7 subjects |
| Aviation | 3 |
| Communications | 1 |
| Earth sciences | 2 |
| Electronics | 5 |
| General | 1 |
| Geophysics | 1 |
| Technology | 4 |
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