機器
3d
3d illustration
abstract
art
background
business
circle
cog
cogwheel
computer
concept
construction
design
draw
drawing
element
engineering
equipment
factory
frame
gear
graphic
icon
illustration
industrial
industry
line
machinery
mechanic
mechanical
mechanism
metallic
model
outline
part
pattern
power
silhouette
sketch
symbol
teamwork
technology
teeth
tool
wheel
wireframe