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| acoustic refraction | |||
| acoustical refraction; refraction of sound; sound refraction | |||
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| refraction | |||
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| sound deflection | |||
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声 折射 : 12 phrases in 6 subjects |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 4 |
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