機器
accuracy
action
arc
background
bright
brightly
cnc
color
construction
cutting
descriptive
engineering
equipment
factory
grinder
hand
heat
industrial
industry
iron
job
laser
lathe
lit
machinist
man
manual
manufacturing
material
mechanical
metal
occupation
portion
power
repairing
safety
sheet
shop
skill
sparks
steel
technology
tool
welder
welding
work
worker
working
workshop