element 1 | element 2 |
---|---|
container |
pressure |
metal |
pressure |
metal |
steam |
pressure |
tool |
steam |
tool |
element 1 | element 2 | result |
---|---|---|
boiler |
carbon dioxide |
fire extinguisher |
boiler |
chain |
machine |
boiler |
tool |
machine |
boiler |
wheel |
machine |
boiler |
wheel |
steam engine |