| |||
| 频率交换 | |||
| ★ 频率变换 | |||
| ★ 变频 | |||
| 变频 | |||
| 频率转换 | |||
| |||
| 频率转换〔变换〕; 变频 | |||
|
frequency- conversion : 30 phrases in 14 subjects |
| Agriculture | 1 |
| Air defense | 3 |
| Business | 1 |
| Chemistry | 2 |
| Communications | 2 |
| Compressors | 1 |
| Electricity | 1 |
| Electronics | 4 |
| Finances | 2 |
| Nautical | 1 |
| Physics | 1 |
| Space | 3 |
| Technology | 6 |
| Telecommunications | 2 |