【建筑】多铲斗开凿机（链式铲斗开凿机，铲斗梯）

multi-bucket excavator

multi-bucket trench digger

multi-bucket excavator

multi-bucket ladder dredger

multi-bucket excavator

multi-bucket excavator (chain bucket excavator, bucket ladder excavator)

multi-bucket dredger (endless chain dredger)

multi-bucket dredger, endless chain dredger