double frequency
| spectral density function
| double frequency abbr. | |
| space | 倍频 |
| tech. | 双频 |
| double-frequency abbr. | |
| gen. | 双 频率; 倍频 |
| spectral density function abbr. | |
| gen. | 谱浅密度函数 |
| earth.sc. | 谱线密度函数; 频谱密度 |
| el. | 频 谱密度函数 |
| geophys. | 频谱密度函数 |
| math. | 谱密度 |
| tech. | 波谱密度函数 |
| |||
| 双重频率的; 倍频的 | |||
| 双频率的 | |||
| |||
| 倍频 | |||
| 双频 | |||
|
double frequency : 41 phrases in 12 subjects |
| Air defense | 7 |
| Business | 1 |
| Computer numerical control | 1 |
| Electric machinery | 4 |
| Electronics | 3 |
| Energy industry | 1 |
| Information technology | 1 |
| Nautical | 1 |
| Shipbuilding | 3 |
| Space | 3 |
| Technology | 15 |
| Telecommunications | 1 |