 |
| |||
| 砾石填料层; 反滤层 | |||
| 过滤网叠 | |||
| 组合滤色片; 过滤组合件; 滤光片组; 填料层 | |||
| filter pack: 4 phrases in 4 subjects |
| Aviation | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Textile industry | 1 |
|
| |||
| 砾石填料层; 反滤层 | |||
| 过滤网叠 | |||
| 组合滤色片; 过滤组合件; 滤光片组; 填料层 | |||
| filter pack: 4 phrases in 4 subjects |
| Aviation | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Textile industry | 1 |