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Relationships
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| Instances | 抽象体 | 这些特质或质量，和任何以物理媒介化身的特质/质量不同。抽象 的实例在意义上，可以说是像数学物体如集合和关系般存在，但是它们不能没有任何物理编码或化身便存在于特定的时间 和地点。 |
| | 机场分类 | AirportClassification is a class of Attributes for representing systems that categorize Airports according to some criteria. There are several such systems, including the International Civil Aviation Organization categories A to E, based on runway lengths, the Federal Aviation Administration system associated with airport functions, and the airport categorization by runway length used in the CIA World Fact Book. |
| | 属性 | 这是我们不能够或选择不去具体化为 Object 的子类别的 质量。 |
| | 中情局机场长度分类 | CIAAirportLengthClassification is a class of Attributes used to characterize Airports according to the length of their longest usable runway. |
| | 实体 | The universal class of individuals. This is the root node of the ontology. |
| | 关联属性 | 这是 Entity 的 Attribute，属于任何来自 它和另一个 Entity 或 一组 Entity 之间的关系. 如： SocialRole 和 PositionalAttribute。 |
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Belongs to Class
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实体 |
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