处于信息时代里,谁都想及早取得国外最新资料以求早日在我国的生产实践中运用。但在大量信息中怎样去芜存精以免引用一些脱离实际不符国情的资料,确是一个非常值得注意的问题。本文将先广义地提出学习范例的主要思路与性质,然后在桥梁范围内列举各种桥型的一些实例,并介绍一些有启发性的构思。 In the information age, everybody wants to obtain the latest foreign information as soon as possible so as to be used in our country’s production practice as early as possible. However, it is indeed a matter worth noting that we should refrain from using large quantities of information to avoid citing some information that is out of the actual situation. This article will first broadly put forward the main ideas and nature of the learning paradigm, and then enumerate some examples of various bridge types within the scope of the bridge, and introduce some enlightening ideas.