機器
3d
action
apparatus
backdrop
background
cog
color
concept
connection
design
drive
drop
element
endurance
engine
engineering
equipment
gear
heap
icon
illustration
industrial
isolated
machinery
many
mechanical
mechanism
metal
metallic
movement
nobody
part
pinion
platinum
progress
quality
rotate
shine
silver
stagnation
stainless
steel
system
teamwork
technical
technology
wheel
white
work