機器
air
aircraft
airplane
aviation
blade
circle
design
detail
electric
energy
engine
engineering
equipment
fan
flight
icon
illustration
industry
isolated
jet
mechanical
metal
modern
motor
outline
plane
power
powerful
propeller
rotation
rotor
sign
silhouette
speed
spiral
technology
transport
transportation
turbine
turbo
turbojet
vector
ventilator
wind