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

目探讨气管切开术后并气管无名动脉生机理。

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.

本从水地着手，论述了吉安地区矿泉水成因类型、找矿方向及其开利用途径。