英文關鍵字
arm
auto
automated
automatic
automation
business
computer
construction
control
electrode
energy
engineering
equipment
factory
fire
futuristic
heat
heavy
hot
industrial
industry
iron
laser
line
machine
machinery
manufacture
manufacturing
mechanic
mechanical
metal
metalwork
modern
movement
nobody
operating
plant
precision
production
robot
robotic
spark
sparks
steel
technology
tool
welder
welding
work