Analyzing the rule of sensitivity field distribution in ECT system, it is found that diversification of sensitivity is not only relative to the medium in the field, but also relative to the position in the field.

• 分析电容层析成像系统敏感场分布的规律，实验结果表明场域内各处灵敏度的变化不仅与场域内介质的分布有关，还与该点在敏感场中所处的位置有关。