Its structure and application are produced and theory of short circuit flow field is put forward.
介绍了其构造及在煤矿中的应用，提出了短路流场理论。
The current progress and development trend in the study of safety theory of field flow in goaf are analyzed.
分析了当前采空区场流安全理论研究的最新进展和发展趋势。
The fan structure is introduced, function and mechanism are analyzed and theory of short-circuit flow field is put forward.
作者介绍了其构造，对风机的作用机理进行了分析，提出了短路流场理论。
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