retreating mining method后退式开采法(采矿) mining concession矿山开采（特许）权 .
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The paper discusses the application and the effects of the coal mining method with retreating-longwall flexible shield support in steeply-inclined coal seam.
叙述了走向长壁后退式柔性掩护支架采煤法在急斜煤层中的应用及效果。
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