英文關鍵字
closeup
coil
component
conductor
copper
detail
electric
electrical
electricity
electromagnetic
electronic
electronics
electrotechnical
electrotechnology
engineering
equipment
factory
hand
inductance
inductor
industrial
industry
insulate
insulator
machine
making
manufacture
manufacturing
part
process
production
reel
tape
tech
technology
tool
transformer
winding
wire
work
working
workshop