difference-frequency
| multiple-modulation
| spectroscopy
| difference frequency | |
| oil од. | 差频 |
| multiple modulation | |
| commun. | 复 调制 |
| IT | 多重调制 |
| mil., air.def. | 多次调制 |
| oil | 复调制 |
| spectroscopy | |
| environ. | 光谱学 |
| life.sc. | 分光术; 分光镜检查; 光谱法 |
| met. | 波谱学 |
| multimed. | 光谱仪 |
| oil | 能谱学; 频谱学 |
| rem.sens. од. | 光谱学 |
| |||
| ★ 差频 | |||
|
difference-frequency : 34 phrases in 11 subjects |
| Air defense | 3 |
| Chemistry | 4 |
| Electronics | 8 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Otorhinolaryngology | 2 |
| Physiology | 1 |
| Space | 2 |
| Technology | 9 |
| Telecommunications | 1 |