機器
arm
base
breaker
build
builder
cable
cement
compression
concrete
construction
device
drill
drilling
dust
electric
equipment
hand
handle
heavy
hydraulic
impact
improvement
industrial
industry
instrument
iron
labor
machinery
man
manual
mechanical
pavement
pillar
power
pressure
project
repair
road
rock
site
stone
technology
tool
torque
using
wall
wire
work
worker