针对Visual Prolog中的接口这一特殊作用域, 在考察其限定机制基本问题的基础上, 详细

分析它所特有的支持限定和开放限定等机制的功能与作用。首先阐述了接口与对象的基本概念,

然后分析了开放限定和支持限定的作用机理, 最后通过实例分析, 揭示了接口作用域限定机制的本

质特性和应用机理。-Visual Prolog interface for the scope of this special, limited mechanism in the investigation of their basic problems, based on detailed analysis of its specific support mechanisms such as limited and open to limited function and role. First described the basic concept of the interface with the object, then analyzing the limits and support the limited opening mechanism, and finally through the case study reveals the mechanism of the interface limit the scope and application of the essential characteristics of the mechanism.