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| cross-spectrum | |||
| cross spectrum | |||
| cross-power spectrum | |||
| 互 谱: 31 phrases in 13 subjects |
| Aviation | 3 |
| Bridge construction | 2 |
| Chemistry | 1 |
| Earth sciences | 3 |
| Ecology | 1 |
| Electronics | 4 |
| General | 3 |
| Oil / petroleum | 5 |
| Oil processing plants | 1 |
| Polymers | 1 |
| Space | 2 |
| Technology | 4 |
| Wind Energy | 1 |
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