靜音膨脹劑操作指導(dǎo)
形狀規(guī)則物體的破碎 Cutting objects of regular shape |
地表地面的挖掘 Digging the ground |
橋墩橋臺的破碎 Breaking bridge piers and abutments |
原石開采 Mining rough stone |
壕溝渠道的開挖 Excavating entrenchment |
隧道挖掘或鉆井 Digging tunnels or boreholes |
靜音膨脹劑操作指導(dǎo)
形狀規(guī)則物體的破碎 Cutting objects of regular shape |
地表地面的挖掘 Digging the ground |
橋墩橋臺的破碎 Breaking bridge piers and abutments |
原石開采 Mining rough stone |
壕溝渠道的開挖 Excavating entrenchment |
隧道挖掘或鉆井 Digging tunnels or boreholes |
