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| засыпной аппарат доменной печи | |||
|
double bell-and-hopper : 4 phrases in 3 subjects |
| Metallurgy | 1 |
| Technology | 2 |
| Transport | 1 |
| |||
| засыпной аппарат доменной печи | |||
|
double bell-and-hopper : 4 phrases in 3 subjects |
| Metallurgy | 1 |
| Technology | 2 |
| Transport | 1 |