抽象集合 meaning in English

abstract set

First we need to define a porttype , which is an abstract set of operations supported by one or more endpoints
首先，我们需要定porttype ，它是由多个端点支持的操作的抽象集合。
Programmer work with database as with abstract indexed collection of objects of different classes using object identifiers as index in this collection
程序员可把此数据库看做属于不同类的对象的带索引的抽象集合，在此集合中，对象标示符就是其索引。