機器
background
business
circle
clock
cog
cogs
cogwheel
communication
concept
construction
cooperation
design
element
engine
engineering
equipment
factory
flat
gear
gears
graphic
icon
idea
illustration
industrial
industry
isolated
machinery
mechanical
mechanics
mechanism
metal
motion
power
progress
round
set
shape
sign
symbol
team
teamwork
technical
technology
transmission
web
wheel
work