英文關鍵字
assembly
board
circuit
closeup
component
detail
device
dip
electric
electrical
electricity
electromagnetic
electronic
electronics
electrotechnical
engineering
equipment
factory
hand
hole
industrial
industry
machine
manufacture
manufacturing
operate
part
parts
pcb
printed
process
production
solder
soldering
technology
terminals
through
welding
wire
work
workbench
working
workshop