auto
automobile
automotive
bearing
block
carme
chrome
circle
clean
crank
crankshaft
diesel
energy
engine
engineering
equipment
fragment
fuel
gear
gearbox
generator
hose
industrial
industry
internal
iron
machine laver
machinery
mechanic
mechanical
metal
metallic
modern
motor
oil
partcula
piston
polished
power
precision
repair
shiny
spare
steel
teamwork
technology
transmission
transportation
valve
vehicle