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| 谐和振动; 谐振 | |||
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vibration harmonic : 29 phrases in 12 subjects |
| Automobiles | 1 |
| Bridge construction | 4 |
| Business | 1 |
| Chemistry | 2 |
| Compressors | 1 |
| Engineering geology | 2 |
| Hydroelectric power stations | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Soil science | 2 |
| Technology | 11 |
| Wind Energy | 1 |
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