機器
aeroplane detail
aerospace
aircraft
aircraft industry
airflow
background
blade
blades
closeup
component
construction
electric generator
electrical
electricity
energetics
energy
engine
engineering
fan
industrial
industry
jet
machinery
mechanic
mechanical
metal
motor
nobody
part
power
powerful
propeller
propulsion
rotate
rotation
rotor
spinning
steel
technology
thrust
titanium
turbine
turbine blades
turbo
turbofan
turbojet
ventilation
ventilator