(subclass DCPowerSource PowerSource) | Mid-level-ontology.kif 2575-2575 | DC power source is a subclass of power source |
(subclass Battery DCPowerSource) | Mid-level-ontology.kif 2577-2577 | Battery is a subclass of DC power source |
(subclass DevicePowerSupply DCPowerSource) | ComputingBrands.kif 3560-3560 | Device power supply is a subclass of DC power source |