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| progressive wave | |||
| propagating wave | |||
| advancing wave | |||
| advanced wave; progress wave; traveling wave; travelling wave; wave train | |||
| 进行波: 26 phrases in 6 subjects |
| Air defense | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Geophysics | 1 |
| Hydroelectric power stations | 7 |
| Technology | 13 |
| Telecommunications | 2 |
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