This paper introduces causes why different size faces are produced in fully-mechanical mining, and methods of making them connect each other.
介绍了综采工作面大小面的形成原因及其对接的方法和步骤。
This paper introduces causes why different size faces are produced in fully-mechanical mining, and methods of making them connect each other.
介绍了综采工作面大小面的形成原因及其对接的方法和步骤。
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