英文關鍵字
cable
coil
coils
computer
conductor
copper
cut
cutter
detail
electricity
energy
galvanize
industrial
industry
light
long
machine
manufacturing
metal
metallic
metalwork
operating
parts
power
powet
precision
producing
production
programmable
pure
raw
recycling
red
reddish
shine
spool
supply
technical
tube
voltage
winding
wire