機器
auger
bit
borehole
connector
construction
crane
details
dirt
drill
drilling
earthworks
engineering
equipment
field
foundation
geology
geotechnical
ground
hole
hydraulic
industrial
industry
instrument
irrigation
machinery
measurement
metal
natural
outdoors
part
pipe
pipeline
plate
protective
rig
road
rod
rusty
silver
site
soil
steel
technology
tool
tube
water
well
wire
work
working