基于知识的棱柱体零件制孔工序的选择和排序（下）４．处理原则处理原则建立在某些参数上。这些参数被定义成ｐｒｏｌｏｇ的规则或简单事实。对于孔的加工，大部分参数定义为特征直径，有些定义各种工序的加工余量，其它的定义制造精度要求。直径类型由下面的语句定义：ｄ... Selection and Sorting of Hole Making Process of Prism Parts Based on Knowledge (Part 2) 4. Principles of treatment The principles of treatment are based on certain parameters. These parameters are defined as prolog rules or simple facts. For hole processing, most of the parameters are defined as feature diameters, some define the allowances for various processes, and others define the manufacturing accuracy requirements. Diameter type is defined by the following statement: d ...