您要查找的是不是：
- stability of top coal 顶煤稳定性
- The top coal's recovery ratio in fully-mechanized sublevel caving face controls the stowing degree of the goaf, thereby influences the stability of hard and massive overlying roof. 摘要综放采场顶煤放出率控制着采空区的充填状况，从而影响着大厚度坚硬顶板的稳定性。
- 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。
- Plenty of top brass attended the ceremony. 有很多大官儿出席了典礼。
- 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。
- 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。
- FRACTAL STUDY ON BLASTING ENERGY OF TOP COAL 综放顶煤爆破能量的分形研究
- The government has taken a measure to maintain the stability of prices. 政府已经采取了措施以确保物价稳定。
- 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
- The war could threaten the stability of the region. 战争可能会影响到这个地区的稳定。
- rational sublevel height of top coal 合理顶煤分段高度
- Special winch can keeps the stability of the rig. 特殊的卷扬机构,有效保持施工的稳定性。
- strength and rigidity of top coal 顶煤强度及刚度
- Study on the Stability of Lidocaine Cream Co. 复方利多卡因乳膏稳定性研究。
- fully mechanized mining method of top coal caving 放顶煤综采法
- Second, stability of the grain market. 第二，粮食市场安定。
- the pace of top coal collapsing initially 顶煤初次垮落步距
- The stability of affairs is very serious. 事态非常严重。
