理学 设计模式 释 visitor pattern 访问者模式 描述在一个对象结构中对某个对象元素需要执行的操作一种设计模式，使用该模式可以在不改变被操作元素的类的前提下定义作用于这些元素的新操作。
软件工程 释文 visitor pattern 访问者模式
- concept dependency diagram
- concept design
- concept dictionary
- concept-drifting
- concept formation
- Concept-Generating Matrix
- concept hierarchy
- conception
- conception channel
- conception index
- Conception of Management of Stated-owned Information Resources(2000)
- conception of society and history
- Conception of State Regulation and Control of Non-State-Owned Information Resources
- conception rate
- conception vessel
- concept learning
- concept map
- concept of ecological values
- concept of magnetism
- concept of nagnetism
- concept of taking photography as a weapon
- concept phase
- concept planning
- concept retrieval
- conceptual