機器
abstract
background
bolt
closeup
construction
detail
element
engineering
equipment
gray
group
hard
hardware
heavy
horizontal
industrial
industry
iron
ironworks
macro
manufacturing
many
match
material
mechanic
mechanical
mess
metal
metallic
nut
objects
part
pile
repair
repairing
screw
shine
shiny
silver
steel
supply
texture
threaded
workshop
zinc