 |
| |||
| standard section; standard rolled steel product; standard steel product | |||
| 标准 钢材: 4 phrases in 3 subjects |
| Architecture | 1 |
| Metallurgy | 2 |
| Technology | 1 |
|
| |||
| standard section; standard rolled steel product; standard steel product | |||
| 标准 钢材: 4 phrases in 3 subjects |
| Architecture | 1 |
| Metallurgy | 2 |
| Technology | 1 |