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灭火 器: 153 phrases in 16 subjects |
Automobiles | 1 |
Aviation | 5 |
Chemistry | 1 |
Ecology | 1 |
Electricity | 2 |
Electronics | 5 |
Firefighting and fire-control systems | 11 |
General | 62 |
Jet engines | 1 |
Military | 4 |
Nautical | 2 |
Occupational health & safety | 1 |
Oil and gas | 1 |
Oil processing plants | 4 |
Security systems | 1 |
Technology | 51 |