機器
abstract
aerospace
airplane
black
cable
component
contemporary
design
dirty
electric
electrical
electronics
energy
engine
engineering
equipment
fighter
fuel
gear
generation
horsepower
industry
iron
jet
macro
metal
metallic
motor
motorblock
old
part
pattern
plane
power
propeller
screw
steel
supply
technic
technology
transport
transportation
tube
turbine
turbojet
vehicle
white
wire