英文關鍵字
background
black
burn
cable
closeup
dirt
electric
electrical
electronic
energy
equipment
fingers
gray
handle
hands
heat
holding
hot
industry
instrument
iron
job
joint
melting
metal
metallic
plastic
red
repair
rusty
service
smoke
solder
soldering
spiral
stand
steel
stick
technology
tool
warm
weld
white
wire
work
worker