機器
abstract
accuracy
aerospace
air
airplane
background
blade
construction
cylinder
electric
energy
engine
engineering
equipment
fan
gas
generator
heavy
industrial
industry
jet
large
machinery
manufacturing
metal
metallic
modern
motor
new
object
open
plane
plant
power
reliability
rotor
safety
science
section
steam
steel
strength
technology
textured
transport
transportation
turbine
vehicle
wind