frequency reference
| signal
| frequency reference | |
| tech. | 基准频率 |
| signal | |
| gen. | 打信号 |
| bridge. | 信号 |
| hockey. | 手势 |
| hydroel.st. | 标志; 符号 |
| radio.amat. | 信号 |
| sport. | 手势; 旗势 |
| tech. од. | 信号 |
| telecom. | 通信 |
| |||
| 基准频率 | |||
| 基淮频率; 参考频率 | |||
|
frequency reference : 29 phrases in 13 subjects |
| Agriculture | 1 |
| Air defense | 2 |
| Automobiles | 1 |
| Aviation | 1 |
| Electricity | 1 |
| Electronics | 7 |
| Hydroelectric power stations | 1 |
| Mathematics | 1 |
| Oil / petroleum | 1 |
| Piezoelectric crystals | 1 |
| Space | 6 |
| Technology | 2 |
| Telecommunications | 4 |