first mining meaning in English
采区准备
第一次采
Examples
- Comprehensive gas control in first mining face of qinglong coal mine
青龙煤矿首采工作面瓦斯的综合治理 - 3 . when table sugar was used as starting materials , it was used and pyrolyzed directly or was first mined with sulphuric acid after surface area of those materials is not larger than that of pas capacity is small in their electric double - layer capacitor , specific surface area has great effect on capacity , the larger specific surface area is , the higher capacity is , . but bulk density will decrease with increase of specific surface area
当以食糖为热裂解碳的原料时，采用直接焦化和酸洗焦化两种方式。所制备的样品比表面积没有聚并苯材料的大，在以30 h _ 2so _ 4为电解质的双电层电容器中，容量相对较小。电极活性物质的比表面积对双电层电容器的容量有很大的影响。 - Based on its special geological and mining conditions of qidong colliery , the cause of water bursting of loose aquifer in the 4th lineage in 7 ( subscript 1 ) 14 full - mechanized mining face of the first mining area was analyzed and technology method of preventing the 4th loose aquifer was discussed according to the occurrence characteristics of loose aquifer and damage characteristics of overburden rock in 7 ( subscript 1 ) coal seam
摘要根据祁东煤矿特殊的地质采矿条件，结合松散含水层赋存特征及7 (下标1 )煤层覆岩破坏特点，分析了一采区7 (下标1 ) 14综采工作面第四系松散含水层出水的原因，探讨了防治四含水的技术途径。