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| |||
| superimposed pre-distillation retort; superimposed pre-distillation retort (газогенератора) | |||
| superimposed retort | |||
| low-temperature carbonization shaft; fuel distillation bell | |||
| швельшахта: 10 phrases in 4 subjects |
| Chemistry | 2 |
| Makarov | 1 |
| Oil / petroleum | 4 |
| Technology | 3 |