 |
| |||
| Bessemer iron | |||
| acid-Bessemer pig iron; acid Bessemer cast iron; Bessemer pig iron | |||
| hematite iron | |||
| acid-bessemer pig iron | |||
| бессемеровский чугун: 2 短语, 2 学科 |
| 冶金 | 1 |
| 自动化设备 | 1 |
|
| |||
| Bessemer iron | |||
| acid-Bessemer pig iron; acid Bessemer cast iron; Bessemer pig iron | |||
| hematite iron | |||
| acid-bessemer pig iron | |||
| бессемеровский чугун: 2 短语, 2 学科 |
| 冶金 | 1 |
| 自动化设备 | 1 |