N → another name for downburst
The event is ore earthquake of rock burst type related to coal mine exploitation and mining activity, the micro-earthquake swarms belong to occasional local stress releasing.
这次微震群属于冲击地压型矿震，与煤矿开采及回采工程活动有关，属于偶发的局部应力释放。
The research achievements establish a foundation for the rock burst forecast method on the basis of the stratum movement theory and micro-seismic observation.
研究结果为利用岩层运动理论与微震监测相结合的方法预测冲击矿压奠定了基础。
As desolate micro-burst of wind;
如一阵凄微的风；
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