機器
art
background
black
blueprint
business
circle
cogwheel
concept
conceptual
connection
decorative
design
development
distortion
doodle
drawing
drawn
element
engineering
equipment
frame
gear
graphic
handdrawn
idea
illustration
image
industrial
industry
interaction
isolated
line
machinery
mechanical
mechanism
model
outline
shading
shape
strokes
style
symbol
technology
tool
volumetric
white