機器
accuracy
action
arc
automated
automobile
bright
brightly
color
construction
cutting
descriptive
engineering
equipment
factory
heat
helmet
industrial
industry
iron
laser
lit
manual
manufacturing
material
men
metal
metalwork
occupation
portion
power
repairing
safety
sheet
shiny
shop
skill
sparks
steel
technology
tool
welder
welding
work
worker
workshop