Practices have proved that quick advancing techniqe is applicable in isolated unmined area Comprehensive top coal caving face.
实践
,
岛综放工作面快速推进技术是可行
。
物)未开采
;;;
;业;;物;;Practices have proved that quick advancing techniqe is applicable in isolated unmined area Comprehensive top coal caving face.
实践,岛综放工作面快速推进技术是可行。
声
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