英文關鍵字
cable
wire
industrial
textured
huge
pipe
chrome
metal
equipment
engineering
metallic
stainless
tool
closeup
armor
rolls
guides
shielding
belt
conveyor
manufacturing
process
winding
insulation
protective
silver
shield
steel
production
line
pattern
industry
tubing
modern
electronic
power
dirty
factory
electric
abstract
technology
pipeline
blue
backgrounds
iron
shiny
commercial