 |
| |||
| 黑色信号电平的 | |||
| |||
| 黑色电平; 黑色信号电平; 暗电平 | |||
| 黑电平信号 | |||
| 黑电平 | |||
| 黑色电平 (电视图像信号电压的最低极限) | |||
| 黑色信号电平 | |||
| |||
| 黑白、同步电平 | |||
| black-level: 31 phrases in 9 subjects |
| Air defense | 3 |
| Aviation | 1 |
| General | 2 |
| Household appliances | 2 |
| Space | 2 |
| Technology | 6 |
| Telecommunications | 12 |
| Television | 2 |
| Video recording | 1 |
|
| |||
| 黑色信号电平的 | |||
| |||
| 黑色电平; 黑色信号电平; 暗电平 | |||
| 黑电平信号 | |||
| 黑电平 | |||
| 黑色电平 (电视图像信号电压的最低极限) | |||
| 黑色信号电平 | |||
| |||
| 黑白、同步电平 | |||
| black-level: 31 phrases in 9 subjects |
| Air defense | 3 |
| Aviation | 1 |
| General | 2 |
| Household appliances | 2 |
| Space | 2 |
| Technology | 6 |
| Telecommunications | 12 |
| Television | 2 |
| Video recording | 1 |