1.
Application Study on Pre-Weakening Hard Top-coal in Fully Mechanized Caving of No.1 Honghui Coal Mines;
红会一矿综放开采坚硬顶煤预先弱化技术应用研究
2.
Basic Study on Technology of Pre-blast Weakening Hard Top-coal in Fully Mechanized Caving Faces;
综放开采坚硬顶煤预先爆破弱化技术基础研究
3.
Test on Hard Top Coal Pre-Blasting and Weakening for High Gassy Fully Mechanized Top Coal Caving Mining Face
高瓦斯综放面预先爆破弱化坚硬顶煤试验
4.
Study on Technology of Hard and Thick Top-coal Weakening in Fully Mechanized Caving Faces in Binchang Mining District;
彬长坚硬厚煤层综放开采顶煤弱化技术研究
5.
Numerical simulation of deep-hole blasting and its application in mine roof weaken
深孔爆破数值模拟及其在煤矿顶板弱化中的应用
6.
If this fourth top is lower than the previous tops, it is a sign of weakness and lower prices.
如果这第4个顶低于先前的顶，它是弱势信号并预示后市价格会更加走低。
7.
Prediction of Water-flowing Fractured Zone's Height in Roof of Coal Based on Neural Networks Trained by Particle Swarm Optimization
基于粒子群优化神经网络的煤层顶板导水裂隙带高度预测研究
8.
The Three-dimensional Visualization Simulation of Top-coal Movement Regulation on the Base of OpenGL;
基于OpenGL放顶煤顶煤运动规律的三维可视化仿真
9.
Fuzzy Comprehensive Evaluation and Prediction of Coal Seam-roof Stability Based
煤层顶板稳定性模糊综合评判和预测
10.
Theory and Application on Top-Coal Caving Characteristics and Water Pre-Infusion to Treat Top-Coal;
顶煤冒放特性与预注水处理顶煤的理论研究及其应用
11.
Optimization of coal seam roof and floor stripping equipment for use in Shengli East No.2 Open-pit Coal Mine
胜利东二露天煤矿煤层顶底板剥离设备优化
12.
A Fisher discriminant analysis model for classifying top coal cavability of the steep seam
急倾斜煤层顶煤可放性分类预测的Fisher判别分析模型及应用
13.
section pre equating
分测验预先等化 分测验预先等化
14.
Qualitiative analysis of brown coal oxidation products in mild oxidizing atmosphere
弱氧化环境下褐煤氧化产物的定性分析
15.
Argillation of a Roof Weak Interlayer due to Water Seepage and Its Influence on Roadway Stability
顶板软弱夹层渗水泥化对巷道稳定性的影响
16.
Weathering Weak Entry of Composite Roof Bolting Technology Research
软弱风化复合顶板巷道锚杆支护技术研究
17.
Simulation of Hard Roof Weakening Ahead of Working Face with Fully Mechanized Caving
坚硬顶板综放工作面超前弱化模拟研究
18.
Research on Non-coupling Charging Coefficient in Softening Hard Roof with Deep-hole Blasting
深孔爆破弱化坚硬顶板不耦合系数研究