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| back current principle | |||
| counterflow principle | |||
| countercurrent technique | |||
| принцип противотока: 7 phrases in 7 subjects |
| Chemistry | 1 |
| Electrochemistry | 1 |
| Forestry | 1 |
| Natural resourses and wildlife conservation | 1 |
| Public utilities | 1 |
| Refrigeration | 1 |
| Textile industry | 1 |