 |
| |||
| acoustic power level; sound power level | |||
| acoustical power level | |||
| sound power level (Lw) | |||
| 声功率 级: 11 phrases in 5 subjects |
| Electric machinery | 1 |
| Refrigeration | 3 |
| Space | 1 |
| Technology | 3 |
| Wind Energy | 3 |
|
| |||
| acoustic power level; sound power level | |||
| acoustical power level | |||
| sound power level (Lw) | |||
| 声功率 级: 11 phrases in 5 subjects |
| Electric machinery | 1 |
| Refrigeration | 3 |
| Space | 1 |
| Technology | 3 |
| Wind Energy | 3 |