機器
3d
accuracy
auto
ball
bearing
chrome
circle
closeup
collection
engine
engineering
equipment
friction
gold
grease
group
illustration
industrial
industry
isolated
machinery
macro
material
mechanic
mechanical
mechanism
metal
metallic
object
precision
quality
reflection
render
ring
roller
rolling
rotation
round
set
shiny
silver
spare
sphere
steel
technical
technology
wheel
white
work