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ignition energy: 19 phrases in 12 subjects |
Aerohydrodynamics | 1 |
Armored vehicles | 1 |
Astronautics | 1 |
Automobiles | 2 |
Aviation | 1 |
Ecology | 1 |
Energy industry | 2 |
General | 1 |
Occupational health & safety | 1 |
Oil and gas technology | 1 |
Technology | 6 |
Transport | 1 |