機器
accuracy
aerospace
automated
automation
automobile
burning
business
closeup
concepts
construction
contemporary
cutting
danger
defense
energy
engineering
equipment
fabrication
factory
flame
foundry
heat
horizontal
igniting
industrial
industry
iron
light
machining
manufacturing
medical
melting
metal
metalwork
objects
part
plasma
programmable
robot
sheet
sparks
steel
technology
tool
work
worker