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
- disease of qi,blood and fluid
- disease of respiratory in wartime
- disease of spleen
- disease of splenic-gastral system
- disease of urinary system in wartime
- disease of veins
- disease paradigm shift
- disease pathology
- disease prevention
- disease prevention strategy
- disease prototype
- disease related insects
- disease related ticks and mites
- disease resistance mechanism
- disease resistant breeding for forage plants
- disease risk analysis
- diseases and pests meteorology
- diseases induced by chemical factor
- diseases induced by industrial dust
- diseases of adrenal medulla
- diseases of cruciferae pasture
- diseases of cyperaceae pasture
- diseases of external ear
- diseases of eyelid
- diseases of heart system