(subclass HardcopyDocument VisualContentBearingObject) | Media.kif 1030-1030 | HardcopyDocument 是 VisualContentBearingObject 的 subclass |
(subclass HardcopyDocument DataDisplayDevice) | Media.kif 1031-1031 | HardcopyDocument 是 DataDisplayDevice 的 subclass |
(subclass HardcopyDocument DataStorageDevice) | Media.kif 1032-1032 | HardcopyDocument 是 DataStorageDevice 的 subclass |
(subclass HardcopyDocument Document) | Media.kif 1033-1033 | HardcopyDocument 是 Document 的 subclass |
(subclass Book HardcopyDocument) | Media.kif 1073-1073 | 书 是 HardcopyDocument 的 subclass |