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Term 1: Term 2:

(subclass DcMotor ElectricalMotor) engineering.kif 800-800 直流电动机电动机subclass
(subclass PermanentMagnetDcMotor DcMotor) engineering.kif 805-805 永磁直流电动机直流电动机subclass
(subclass SeparatelyExcitedDcMotor DcMotor) engineering.kif 810-810 单独激励直流电动机直流电动机subclass


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