機器
auto
automobile
automotive
background
block
car
clean
complex
cylinder
detail
diesel
electric
engine
engineering
equipment
fuel
gear
hose
industrial
industry
injectors
iron
isolated
machinery
manufacturing
mechanic
mechanical
metal
metallic
modern
motor
motorized
new
old
part
performance
polished
power
pump
shiny
steel
studio
technology
transmission
transportation
valve
vehicle
white