機器
black
bolt
box
bulldozer
cable
car
color
connection
construction
engine
engineering
equipment
flexibility
front
fuel
heavy
hose
hydraulics
in
industrial
industry
injecting
iron
line
machinery
metal
mover
new
occupation
part
pipe
power
pressure
pump
repairing
road
row
rubber
service
steel
strength
technology
tool
tractor
tube
water
work
yellow