機器
automobile
automotive
belt
block
car
closeup
combine
component
cooler
cylinder
detail
diesel
diesel engine
engine
engineering
equipment
gear
generate
hardware
harvester
heavy
industrial
industry
injector
machinery
mechanic
mechanical
mechanism
metal
metallic
modern
motor
new
nozzle
oil
part
pipe
power
repair
steel
technology
tractor
transmission
transportation
truck
valve
vehicle