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- weakening of top coal 顶煤弱化
- The law of top coal movement on a fully mechanized longwall face with top coal caving wasanalysed thoroughly on the basis of field observation andfinite element calculation. 本文根据现场观测、数值计算以及理论分析,详细阐述了放顶煤采场的顶煤变形运动规律,指出了顶煤变形运动可划分成四个区:顶煤变形区,压裂区,松动区和放落区。
- The movement of top coal and top roof is discussed with the data observed from the caving mining of deeply inclined thick coal seam with horizontal section in Zhaogezhuang colliery of Kailuan Group. 就开滦集团赵各庄矿在急倾斜厚煤层采用水平分段开采过程中的现场观测,探讨顶煤和顶底板运移。
- Plenty of top brass attended the ceremony. 有很多大官儿出席了典礼。
- The coal seam of No. 5102 face in Wuyang coal mine is steep, soft, and undulate.Aiming at this problem, the displacement and stress of top coal, roof and floor were researched by using UDEC software. 摘要针对五阳煤矿5102工作面倾角大、煤层松软、煤层起伏大、综放开采的条件,利用UDEC数值模拟软件分别通过沿工作面走向和倾向剖面建立模型,对顶板(煤)、底板的位移和应力变化进行了研究。
- Based on the gushing of gas, crack of top coal and "O" circle theory, the paper brings up the design for gas drawing and ventilation method, and designs the extraction method for high output workface. 为了解决影响实现万吨工作面的问题,通过对瓦斯涌出的分析,基于顶煤裂隙分布发育规律及“O”圈理论设计了瓦斯抽放及通风排瓦斯方式,设计提出了实现高产高效工作面的回采工艺。
- One weakening of normality is quasinormality. 正规性的一种减弱形式是拟正规性。
- FRACTAL STUDY ON BLASTING ENERGY OF TOP COAL 综放顶煤爆破能量的分形研究
- But the weakening of the English seemed irremediable. 但是英军的困惫看来是无可救药的。
- The curve fractal of top coal displacement 顶煤位移曲线的分形特征
- deformation and movement regularity of top coal 顶煤运移规律
- rational sublevel height of top coal 合理顶煤分段高度
- strength and rigidity of top coal 顶煤强度及刚度
- fully mechanized mining method of top coal caving 放顶煤综采法
- the pace of top coal collapsing initially 顶煤初次垮落步距
- I heard there are a lot of top masseurs in China. 我听说中国有许多一流的按摩师。
- Maintaining law and order is of top priority. 维持法律和秩序是头等大事。
- The game uses or so key of top and bottom. 游戏用上下左右键。
- Really large specimens of top quality are rare. 尤其大颗粒优质的宝石是极稀有的。
- This is a weakening of this distributivity condition, called modularity. 这个分配性条件可减弱为所谓性的条件,一个格称为模格。