 |
| |||
| basic open-hearth furnace | |||
| |||
| basic open-hearth furnace; basic openhearth furnace | |||
|
four martin basique : 3 短语, 2 学科 |
| 冶金 | 2 |
| 技术 | 1 |
|
| |||
| basic open-hearth furnace | |||
| |||
| basic open-hearth furnace; basic openhearth furnace | |||
|
four martin basique : 3 短语, 2 学科 |
| 冶金 | 2 |
| 技术 | 1 |