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美国LONG—Airdox公司的LRB—15AR型顶板锚杆机是一种革新产品,最小适用高度仅686mm,最大钻锚杆高度1 549mm,离地高
The United States LONG-Airdox company’s LRB-15AR roof bolt machine is an innovative product, the minimum applicable height of only 686mm, the maximum height of the anchor rod 1 549mm, from the ground high