機器
auto
automobile
automotive
belt
block
bright
car
chrome
clean
complex
concept
detail
diesel
electric
energy
engine
engineering
equipment
fuel
futuristic
gear
generator
hose
industrial
industry
iron
machinery
manufacturing
mechanic
mechanical
metal
metallic
modern
motor
new
oil
part
polished
power
prototype
repair
shiny
speed
steel
technology
transmission
transportation
valve
vehicle