抽象就是忽略一个主题中与当前目标无关的那些方面，以便更充分地注意与当前目标有关的方面。抽象并不打算了解全部问题，而只是选择其中的一部分，暂时不用部分细节。抽象包括两个方面，一是过程抽象，二是数据抽象-Abstract is that it has overlooked a theme has nothing to do with the current objectives of those aspects in order to more fully with the current objectives of the attention-related aspects. Abstract does not intend to understand all the issues, but only select one part of the moment do not have some details. Abstract two aspects, first, the process of abstraction, and the other is an abstract data