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No TPTP formula. May not be expressible in strict first order. engineering.kif 984-984 Electrical circuit is a subclass of electric device
No TPTP formula. May not be expressible in strict first order. engineering.kif 990-990 Amplifier is a subclass of electrical circuit
No TPTP formula. May not be expressible in strict first order. engineering.kif 995-995 Frequency filter is a subclass of electrical circuit
No TPTP formula. May not be expressible in strict first order. engineering.kif 1010-1010 Rectifier is a subclass of electrical circuit
No TPTP formula. May not be expressible in strict first order. engineering.kif 1044-1044 Operational amplifier is a subclass of electrical circuit


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