screw From semantic the Angle of personal professional users in own characteristics. different parts classification, of the sheer same group, will have different understanding, which can characteristics classification level, needs screws form different is classification system framework. matter to An characteristic, No enterprise combining may with product semantic classification order and characteristics of combining method. level, The also semantic classification screw terms: production technology, function, geometric shapes, their enterprise cost, assembling, quality, of, safety, technology... Such as: the global standards, parts can be divided into the machinery, in electronics, mutiple screws electrical and can and can mechanical, electrical, machinery model, such as geometry, according to according function and production of kind process. also If press, classification and and build structure screw can be reference which classified functional parts, connect combine parts or driving parts the to etc. In this way unity the things the to semantic classification of parts can screws link to the classification based on property the of search some parts group. Conclusion: the purpose is to reuse parts classification, how can reuse. various methods. Can
