2. Archives, personnel, equipment, time, products, raw materials, and so on, if they are bar code, can be retrieved. 档案、人员、器材、时间、产品、原材料等等,如果他们是条码化的,都可以被检索到。
3. By analysis and discussion of tool requirement and selection of tool materials for dry cutting, analyzes the application of dry cutting in milling process. 分析了干式切削加工对刀具的要求,讨论了刀具材料的选择,分析了干式切削在铣削中的应用实例。