Hydraulic Roofbolter is the key equipment for Ground Anchorage Engineering, and has very important affection to the quality of the engineering.
液压锚杆钻机是岩土锚固程的关键设
,
程质量有重要影响。
Hydraulic Roofbolter is the key equipment for Ground Anchorage Engineering, and has very important affection to the quality of the engineering.
液压锚杆钻机是岩土锚固程的关键设
,
程质量有重要影响。
声:以上例句、词性分类均
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