機器
background
business
cartoon
childish
circle
cogs
cogwheel
communication
concept
connection
construction
cooperation
design
doodle
draw
drawing
drawn
element
engine
engineering
equipment
factory
gear
graphic
hand
icon
idea
illustration
industrial
industry
machinery
mechanical
mechanism
motion
power
rough
round
sketch
spin
symbol
teamwork
technical
technology
tool
transmission
wheel
work