機器
abstract
aircraft
aviation
blade
blades
closeup
design
detail
element
engine
engineering
equipment
factory
gear
heavy
high
industrial
industry
inside
machinery
manufacture
manufacturing
mechanical
mechanism
metal
metallic
modern
motor
open
part
plane
plant
power
power plant
powerful
precision
repair
rotor
shaft
steam
steel
technology
transport
transportation
turbine
turbo
vehicle
wheel
workshop