| |||
| 谱函数; 功率谱 | |||
| 光谱函数 | |||
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spectral function : 36 phrases in 13 subjects |
| Air defense | 1 |
| Bridge construction | 1 |
| Business | 1 |
| Earth sciences | 4 |
| Electronics | 2 |
| General | 1 |
| Geophysics | 1 |
| Mathematics | 5 |
| Nuclear physics | 1 |
| Statistics | 1 |
| Technology | 11 |
| Telecommunications | 1 |
| Wind Energy | 6 |