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| 频率数比 | |||
| 频率比率 | |||
| 频比 (通常指强制频率与自然频率的比) | |||
| 频率比 | |||
| 相对频率; 频率比例 | |||
| 频数比; 频比; 频率比 | |||
| frequency ratio: 38 phrases in 14 subjects |
| Agriculture | 1 |
| Air defense | 4 |
| Aviation | 1 |
| Business | 1 |
| Communications | 2 |
| Construction | 1 |
| Electric machinery | 1 |
| Electronics | 6 |
| General | 1 |
| Geophysics | 2 |
| Semiconductors | 1 |
| Space | 7 |
| Technology | 9 |
| Telecommunications | 1 |
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