accuracy
alloy
automobile
background
belt
carme
chrome
clean
communication
complexity
crank
cylinder
development
diesel
driving
electric
electrical
electricity
energy
engine
engineering
equipment
fuel
gear
generation
generator
industrial
industry
iron
machine laver
machinery
macro
mechanic
metal
metallic
modern
motor
partculas canal alfa
piston
power
repair
shiny
silver
steel
strength
supply
technology
transportation
valve
vehicle