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