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设备 |
A Device is an Artifact whose purpose is to serve as an instrument in a specific subclass of Process.
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眼镜 | A lens or pair of lenses with or without frames whose purpose is to to correct a defect in vision. This class covers ordinary eye glasses, reading glasses, contact lenses, monocles, etc. |
| | 镜片 | An OpticalDevice which consists of a polished, transparent piece of glass or plastic. Lenses are often part of other OpticalDevices. |
| | 显微镜 | An OpticalDevice with a stand and a focus, which is used for magnifying the images of things that are placed in the stand. |