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| 层流边界 | |||
| laminar boundary: 15 phrases in 8 subjects |
| Aviation | 3 |
| Hydraulics | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 2 |
| Telecommunications | 1 |
| Wind Energy | 2 |
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