冲孔与扩孔
punching and hole-expanding
缩径与扩径
reducing and expanding duct
钻孔扩孔
bore hole drilling and enlarging
超长大直径钻孔灌注
super long-large diameter bored pile
extra-long and large drilling pouring
超长大直径钻孔灌注桩
super long-large diameter bored pile
大直径钻孔灌注桩
large diameter bored pile
large-diameter cast-in-situ concrete pile
Large Diameter Cast-in-situ Bored Piles
large diameter bored piles
large-diameter filling piles
bored piles with large diameter
bark grafting with cuttings
bore cast -in -place with major diameter
大直径钻孔桩
large-diameter bored pile
large diameter bored pile
large bored piles
千米大直径钻孔
1000 m long great diameter borehole