如此反复，直至获得柔性掩护支架的最佳结构。
Repetition goes on until the best structure of the flexible shield support is achieved.
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。
The paper discusses the application and the effects of the coal mining method with retreating-longwall flexible shield support in steeply-inclined coal seam.
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