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锚杆钻机
tech. jumbolter
锚杆钻机曾称"锚杆打孔安装机”。具有向顶板或巷道两帮钻孔并安装锚杆功能的钻机
expl. roofbolter
锚杆钻机
: 2 phrases in 2 subjects
Engineering geology1
General1

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