Objective To discuss genesic mechanism of trachea arteria anonyma fistula after tracheotomy.
目的探讨管切开术后管无名动脉瘘的生机理。
Objective To discuss genesic mechanism of trachea arteria anonyma fistula after tracheotomy.
目的探讨管切开术后管无名动脉瘘的生机理。
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.
本文从水文地质环境着手,论述吉安地区矿泉水的成因类型、找矿方向及其开利用途径。
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