英文關鍵字
assembling
board
circuit
closeup
component
conductor
copper
detail
device
electric
electrical
electricity
electromagnetic
electronic
electronics
electrotechnical
electrotechnology
engineering
equipment
hand
industry
iron
machine
manufacture
part
parts
solder
soldering
tech
technology
terminal
terminals
transformer
welding
winding
wire
workbench
worker
working
workshop