aggregation relationship

基本解释

Generic aggregation represents hierarchical relationship, namely nesting of elements.
廣義聚集實現層次聯系，即元素間的嵌套；
Next, create an association relationship between the classes that enables you to choose either an aggregation or a composition relationship.
下一步，在類間創建關聯關系，這使您能夠在聚集及組成關系中選擇一個。
Next, , create an association relationship between the classes that enables you to choose eitheran aggregation or a composition relationship.
下一步，在類間創建關聯關系，這使您能夠在聚集及組成關系中選擇一個。翅。