noise isolation
| class
| noise isolation | |
| seal. | 隔离噪声 |
| class | |
| corp.gov. | 等级 |
| IT | 类 别; 分类 ，种类; 类程 |
| IT од. | 类 |
| math. | 组，类 |
| met. | 分类; 级; 分级 |
| tech. | 类型，种类 |
| |||
| 隔离噪声 | |||
|
noise isolation : 9 phrases in 5 subjects |
| Architecture | 1 |
| Bridge construction | 1 |
| Electric machinery | 1 |
| Geophysics | 1 |
| Technology | 5 |