No TPTP formula. May not be expressible in strict first order. | Media.kif 1128-1128 | OpticalDisc 是 DigitalDataStorageDevice 的 subclass |
No TPTP formula. May not be expressible in strict first order. | Media.kif 1154-1154 | CompactDisc 是 OpticalDisc 的 subclass |
No TPTP formula. May not be expressible in strict first order. | Media.kif 1187-1187 | BluRayDisc 是 OpticalDisc 的 subclass |
No TPTP formula. May not be expressible in strict first order. | Media.kif 1255-1255 | DVD 是 OpticalDisc 的 subclass |