| |||
| 自动操作阀 | |||
| 自动控制阀 | |||
| 自动阀 | |||
| 自动操纵阀 | |||
|
automatically operated valve : 3 phrases in 3 subjects |
| Aviation | 1 |
| Oil processing plants | 1 |
| Technology | 1 |
| |||
| 自动操作阀 | |||
| 自动控制阀 | |||
| 自动阀 | |||
| 自动操纵阀 | |||
|
automatically operated valve : 3 phrases in 3 subjects |
| Aviation | 1 |
| Oil processing plants | 1 |
| Technology | 1 |