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振动 机 器 : 44 phrases in 9 subjects |
| Agriculture | 1 |
| Automobiles | 5 |
| Aviation | 6 |
| Biophysics | 1 |
| Electricity | 1 |
| Electronics | 2 |
| Metallurgy | 1 |
| Space | 2 |
| Technology | 25 |
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