代码字段可能使用字母值的一个抽象集。
The implementation team converts this abstract, high-level design into a detailed set of design models and the programming language implementation.实现团队转换这个抽象、高级别的设计成为详细的设计模型的集合和编程语言的实现。
A port type is a named set of the abstract operations and messages involved.端口类型就是命名了的一组抽象操作和涉及到的消息集合。
In this paper, an isolated point operator was used to define a topology abstract set.在本文中, 笔者使用了孤立算子定义拓扑.