Objective To discuss genesic mechanism of trachea arteria anonyma fistula after tracheotomy.

目的探讨气管后并发气管无名动脉瘘的发生机理。

From the viewpoint of the hydrogeological environment,this paperdescribes the genesic types,prospecting direction and its way of deve-lopment of the spring in Jianregion.

本从地质环境着手，论述了吉安地区的成因类型、找方向及其发利用途径。