機器
air
airplane
aluminum
background
billet
blade
car
centrifugal
component
compressor
construction
cooling
detail
energy
engine
engineer
engineering
equipment
factory
fan
gas
glistening
impeller
industry
jet
machinery
manufacturing
metal
metallic
metalworking
milling
part
power
pressure
propeller
pump
rotor
shape
spare
speed
system
technology
transportation
truck
turbine
turbo
typical
vehicle
white