機器
aeroplane
air
aircraft
airline
airplane
airscrew
aviation
blade
civil
closeup
combustion
design
detail
energy
engine
engineering
equipment
fan
flight
flying
force
fuel
industry
jet
machinery
maintenance
mechanic
mechanical
metal
metallic
motor
part
plane
power
powerful
propeller
rotor
science
speed
spiral
steel
technology
thrust
transport
transportation
turbine
turbo
turbojet
white