英文關鍵字
air
argon
automated
automatic
automotive
business
closeup
conditioners
construction
control
conveyor
cutting
electronics
energy
engineering
equipment
factory
fire
gloves
heat
holes
hot
industrial
industry
iron
laser
machine
manufacture
manufacturing
mechanic
mechanical
metal
metalwork
modern
motion
nobody
perforation
production
refrigeration
robot
robotic
roll
sheets
stamping
steel
technology
ventilation
welder
work