In the electronic-device example, that transistor is a component-of operational amplifier or that the latter is a type-of electronic device is just as much a fact about its domain as a CYC fact about some aspect of space, time or numbers.
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- 在工程设计中,或许会讨论到电子设备领域的本体,它包含一些描述基本概念的词汇,比如晶体管,运算放大器,电压等;也包含这些基本元素间的关系,运算放大器是电子设备的一种,而晶体管是运算放大器的组件。