Its successful selection and application are the prerequisite for successful longwall mining.

正确、合理地选择液压支架架型是长壁工作面采煤成功的前提和关键.

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Modern longwall mining employs hydraulic powered supports at the face area.

现代长壁工作面采煤已在挖掘区使用液压支架.

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Therefore its successful selection and application are the prerequisite for successful longwall mining.

是以正确的选择和应用液压支架是长壁工作面采煤乐成的先决前提.

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