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valve-disk : 54 phrases in 17 subjects |
| Automated equipment | 2 |
| Automobiles | 4 |
| Construction | 6 |
| Electrical engineering | 1 |
| General | 1 |
| Makarov | 5 |
| Mechanic engineering | 4 |
| Military | 2 |
| Oil / petroleum | 4 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Production | 1 |
| Refrigeration | 1 |
| Sakhalin | 2 |
| Technology | 16 |
| Thermal engineering | 2 |
| Transport | 1 |