英文關鍵字
anchor
auger
block
building
concrete
construction
drill
drilling
engineering
ground
hole
hydraulic
industrial
microdrilling
pile
piling
rig
support
英文關鍵字
anchor
auger
block
building
concrete
construction
drill
drilling
engineering
ground
hole
hydraulic
industrial
microdrilling
pile
piling
rig
support