| (subclass FluidPowerDevice EngineeringComponent) | engineering.kif 737-737 | FluidPowerDevice e' uma sub-classe de Componente de Engenharia |
| (subclass FluidCylinder FluidPowerDevice) | engineering.kif 907-907 | FluidCylinder e' uma sub-classe de FluidPowerDevice |
| (subclass Valve FluidPowerDevice) | engineering.kif 913-913 | Valve e' uma sub-classe de FluidPowerDevice |
| (subclass Faucet FluidPowerDevice) | engineering.kif 932-932 | Faucet e' uma sub-classe de FluidPowerDevice |
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