機器
3d
abstract
art
background
blue
brain
business
button
cogs
color
concentration
concept
creativity
design
education
element
engineering
gear
glow
head
human
icon
idea
illustration
imagination
industrial
industry
innovation
inside
inspiration
intelligence
male
mechanical
mechanics
metallic
mind
part
person
power
profile
science
silhouette
solution
symbol
technology
think
thought
wheel
work