| |||
| 体积压缩 | |||
| 音量压缩 | |||
|
volume compression : 15 phrases in 6 subjects |
| Automobiles | 8 |
| Compressors | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Shipbuilding | 1 |
| Technology | 1 |
| Telecommunications | 2 |
| |||
| 体积压缩 | |||
| 音量压缩 | |||
|
volume compression : 15 phrases in 6 subjects |
| Automobiles | 8 |
| Compressors | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Shipbuilding | 1 |
| Technology | 1 |
| Telecommunications | 2 |