 |
| |||
| public-address system; sound-reinforcement system | |||
| public-address reinforcement system (PA system); PA system (public-address reinforcement system) | |||
| система озвучения и звукоусиления: 10 短语, 3 学科 |
| 技术 | 1 |
| 电子产品 | 7 |
| 马卡罗夫 | 2 |
|
| |||
| public-address system; sound-reinforcement system | |||
| public-address reinforcement system (PA system); PA system (public-address reinforcement system) | |||
| система озвучения и звукоусиления: 10 短语, 3 学科 |
| 技术 | 1 |
| 电子产品 | 7 |
| 马卡罗夫 | 2 |