Selecting environment vulnerable factors and establishing evaluation index system, the environment vulnerability of study area was evaluated.

通过筛选环境脆弱性因子，建立评价指标体系，进行了研究区环境脆弱性评价。

By use of sensitivity technique the authors give the definition of the index of power grid vulnerable region and propose an algorithm to calculate parameter sensitivity.

利用灵敏度技术定义了电网脆弱域指标，给出了计算参数灵敏度的算法。

This paper established the principles and the structure of vulnerable-evaluation index system, and set up the evaluation-index system based on the several ways.

本文确立了承灾体脆弱性评价指标体系原则和评价体系的结构，并通过反推法、信息量法等多种方法首次建立了承灾体脆弱性评价指标体系。