機器
abstract
background
blur
bright and shiny wire
cable
closeup
coil
communication
connection
construction
copper recycling
copper texture
copper wires
detail
electric
electrical
electromagnetic
electronic
energy
engineering
expensive
factory
inductor
industry
line
material
metallic
old
power
raw
raw material
recycle
recycling
scrap
scrap metal
scrap metal recycling
skein
spiral
spool
structure
technology
texture
voltage
waste
winding
wire