 |
| |||
| lamellar shutter | |||
| leaf shutter | |||
| flap gate valve (MichaelBurov) | |||
| lamella shutter; louver shutter | |||
| лепестковый затвор: 3 短语, 1 学科 |
| 水泥 | 3 |
|
| |||
| lamellar shutter | |||
| leaf shutter | |||
| flap gate valve (MichaelBurov) | |||
| lamella shutter; louver shutter | |||
| лепестковый затвор: 3 短语, 1 学科 |
| 水泥 | 3 |