气 瓶 : 264 phrases in 22 subjects |
Armored vehicles | 1 |
Automobiles | 6 |
Aviation | 9 |
Chemistry | 3 |
Cooking | 1 |
Electronics | 8 |
Firefighting and fire-control systems | 1 |
Gas processing plants | 1 |
General | 54 |
Geochemistry | 1 |
Military | 11 |
Missiles | 1 |
Nautical | 1 |
Nuclear and fusion power | 1 |
Oil and gas | 5 |
Oil processing plants | 12 |
Scuba diving | 2 |
Shipbuilding | 1 |
Sports | 1 |
Technology | 139 |
Torpedoes | 2 |
Welding | 3 |