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| материи разрежения | |||
| волна разрежения | |||
| 疏波: 15 phrases in 7 subjects |
| Aerodynamics | 1 |
| Aviation | 2 |
| Electronics | 1 |
| General | 1 |
| Oil and gas | 1 |
| Technology | 8 |
| Thermal engineering | 1 |
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