英文關鍵字
red
backlight
dark
darkness
cool
metal
industry
machine
engineering
steel
iron
detail
technology
work
equipment
stainless
manufacturing
part
factory
industrial
tool
closeup
macro
construction
chrome
manufacture
cnc
shiny
silver
screw
wheel
old
processing
joint
metallic
rusty
lathe
mill
metalwork
alloy
close
store
machining
valve
spare
aluminum
gear
new
component
mechanic