英文關鍵字
background
blue
board
chip
circuit
circuitry
closeup
cnc
computer
cutter
cutting
detail
digital
electric
electrical
electricity
electronic
engineering
equipment
factory
futuristic
industrial
industry
lathe
machine
machining
macro
manufacture
manufacturing
metal
metalwork
micro
milling
modern
motherboard
pcb
precision
process
processing
semiconductor
steel
tech
technology
tool
turning
work