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variable valves : 44 phrases in 15 subjects |
Antennas and waveguides | 1 |
Astronautics | 1 |
Automated equipment | 3 |
Automobiles | 10 |
Aviation | 5 |
Construction | 1 |
Electrical engineering | 2 |
Makarov | 3 |
Mass media | 1 |
Mechanics | 2 |
Nautical | 3 |
Production | 2 |
Programming | 1 |
Technology | 8 |
Transport | 1 |