| |||
| 参考信号发生器; 标准信号发生器 | |||
| 基准信号发生器 | |||
|
reference generator : 9 phrases in 5 subjects |
| Air defense | 2 |
| Electric machinery | 1 |
| Electronics | 3 |
| Technology | 2 |
| Telecommunications | 1 |
| |||
| 参考信号发生器; 标准信号发生器 | |||
| 基准信号发生器 | |||
|
reference generator : 9 phrases in 5 subjects |
| Air defense | 2 |
| Electric machinery | 1 |
| Electronics | 3 |
| Technology | 2 |
| Telecommunications | 1 |