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| constant frequency | |||
| constant frequency (率) | |||
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恒频 : 58 phrases in 13 subjects |
| Air defense | 8 |
| Aviation | 12 |
| Business | 1 |
| Electric machinery | 1 |
| Electrical engineering | 1 |
| Electronics | 14 |
| General | 4 |
| Geophysics | 3 |
| Metallurgy | 2 |
| Space | 4 |
| Technology | 3 |
| Telecommunications | 1 |
| Wind Energy | 4 |
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