求翻译：本文首先，对论文的研究背景及意义进行了论述；其次，对应急通信任务进行了描述，初步构建应急通信生成指标；再次，利用CBR机制遍历任务库，利用事先选定好的相似度度量方法挑选出与新任务相似程度最高的m个任务；最后，在方案中选出与这m个任务相对应的m套方案，并对备选方案进行修改，得到初始方案。本文充分利用已有案例库资源，提高了产生方案的效率。是什么意思？

Firstly, the research background and significance are discussed; emergency communications task described in the initial build emergency communications to generate indicators; again, cbr mechanism to traverse the task library, the use of the pre-selected similarity measure selection the highest degre

This article first of all, on the Thesis research background and significance are discussed; and secondly, the emergency communications task, initially built emergency communications; once again generated using CBR mechanism, traverse task library, using pre-selected good similarity measurement meth

This article first, has carried on the elaboration to the

This first, on papers of research background and the significance for has Exposition; second, on emergency communications task for has description, preliminary construction emergency communications generated index; again, using CBR mechanism traverse task library, using prior selected good of simila