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| 波浪折射 | |||
| 波折射 | |||
| 水波折射; 波的折射 | |||
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wave refraction : 23 phrases in 7 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Bridge construction | 1 |
| Communications | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Space | 7 |
| Technology | 11 |
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