The actual application of the irregular mining method "tree branch form" mining method in the coal pipe is introduced.
介绍了非正规采煤法“树枝状”采煤法在极薄煤层开采中的实际应用；
The actual application of the irregular mining method "tree branch form" mining method in the coal pipe is introduced.
介绍了非正规采煤法“树枝状”采煤法在极薄煤层开采中的实际应用；
应用推荐