stoping face 中文意思是什麼
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Probing into the stoping face methane prevention and control in difficult - to - drain coal - beds
難抽放煤層回採工作面瓦斯防治技術探討 -
Stress analysis and optimization of parameters of coal pillar in the stoping tunnel of comprehensive mechanized coal mining face
綜采工作面回採巷道煤柱應力分析與參數優化
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