(subclass Rubber PlantSubstance) | Mid-level-ontology.kif 9180-9180 | 橡胶 是 植物物质 的 subclass |
(subclass Rubber BodySubstance) | Mid-level-ontology.kif 9181-9181 | 橡胶 是 身体物质 的 subclass |
(subclass Rubber Hydrocarbon) | Mid-level-ontology.kif 9182-9182 | 橡胶 是 烃 的 subclass |