effective frequency
| range
| effective frequency | |
| adv. | 有效频次 |
| range | |
| gen. | 一系列; 行; 排 |
| el. meas.inst. | 标称范围 |
| forestr. | 区域; 幅距 |
| forestr. од. | 全距 |
| sport. | 变化，变动 |
| |||
| 有效频次 | |||
| 有效频率 | |||
|
effective frequency : 9 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Geophysics | 1 |
| Information technology | 1 |
| Otorhinolaryngology | 1 |
| Space | 2 |
| Technology | 1 |
| Telecommunications | 1 |