针对煤矿回采巷道的特点，设计研制出适合回采巷道煤帮支护用的杆体全长可回收水泥锚固金属锚杆。
Considering the characteristics of the mine gateway, full length recoverable cement metal bolt applicable to wall support in the mine gateway was designed and developed.
针对煤矿回采巷道的特点，设计研制出适合回采巷道煤帮支护用的杆体全长可回收水泥锚固金属锚杆。
Considering the characteristics of the mine gateway, full length recoverable cement metal bolt applicable to wall support in the mine gateway was designed and developed.
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