她来自矿区：或者不如说来自矿井口上一个酒馆。
Out of a mine: or rather out of the saloon at thehead of the pit.
本实用新型公开了一种煤矿井口用的液压旋转式安全门，属于煤矿安全 设备技术领域。
The utility model discloses a hydraulic revolving safety door used at mine entrance and belongs to the technical field of equipment for mine safety.
本文总结了作者根据河南省平顶山矿务局八矿井口实际情况所设计的一套井口设施联动闭锁系统。
The paper summarises the operational performance of the interlock System in pit-head equipment at No. 8 shaft of Ping-Ding-Shan Mine Bureau, Henan Province.
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