機器
3d
aeroplane
aircraft
airline
airplane
airscrew
automotive
aviation
blade
business
car
component
computer
design
engine
engineering
equipment
fan
flight
future
gear
generator
industrial
industry
jet
manufacturing
material
mechanic
mechanical
metal
metallic
model
motor
part
plane
plastic
power
print
printer
processing
production
propeller
science
steel
technology
threedimensional
transportation
turbine
vehicle