This chapter is the focus of this article, because assessment index system should first buildindex system, which is the first step.
本章内容是本文的重点，对评价指标体系的研究首先要构建指标体系，此乃第一步。
2
Because build, express temporarily with fill can reduce systematic performance badly, be in so as far as possible the kind that wants sort should is below the circumstance buildindex.
由于建立和填充临时表会严重降低系统性能，所以在尽可能的情况下应该为要排序的列建立索引。
3
A search engine crawls a large set of pages efficiently in a small time frame to build its index.