 |
| |||
| sectioning valve (MichaelBurov); sectioning gate valve (MichaelBurov) | |||
| sectionalized valve (Yeldar Azanbayev) | |||
| секционирующая задвижка: 1 短语, 1 学科 |
| 热工程 | 1 |
|
| |||
| sectioning valve (MichaelBurov); sectioning gate valve (MichaelBurov) | |||
| sectionalized valve (Yeldar Azanbayev) | |||
| секционирующая задвижка: 1 短语, 1 学科 |
| 热工程 | 1 |