(subclass AcrossVariableAccumulator PureTwopole) | engineering.kif 513-513 | AcrossVariableAccumulator e' uma sub-classe de PureTwopole |
(subclass Inertor AcrossVariableAccumulator) | engineering.kif 578-578 | Inertor e' uma sub-classe de AcrossVariableAccumulator |