| |||
| 键控〔控制，调制〕器; 电键〔电钥〕电路; 定 〔计〕岭器 | |||
| 键控器; 控制器; 调制器; 计时器 | |||
| 电键器 | |||
| 电键电路; 定时器 | |||
|
keyer : 18 phrases in 5 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Shipbuilding | 1 |
| Technology | 13 |
| Telecommunications | 1 |
| |||
| 键控〔控制，调制〕器; 电键〔电钥〕电路; 定 〔计〕岭器 | |||
| 键控器; 控制器; 调制器; 计时器 | |||
| 电键器 | |||
| 电键电路; 定时器 | |||
|
keyer : 18 phrases in 5 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Shipbuilding | 1 |
| Technology | 13 |
| Telecommunications | 1 |