英文關鍵字
cable
cabling
check
circle
closeup
coil
color
communication
connect
connection
control
copper
cord
detail
electric
electricity
electrode
energy
engineering
equipment
factory
foreman
gold
industrial
industry
inspection
inspector
line
machine
machinery
manufacturing
metal
metallic
movement
plant
power
production
quality
rotation
spool
still
technology
welding
wire
wired