機器
blade
carbon
construction
cut
cutter
disc
engineer
engineering
equipment
factory
fire
garage
grind
grinder
hand
industrial
industry
iron
job
labor
light
machinery
maintenance
manual
manufacture
manufacturing
material
mechanic
metal
metal workshop
person
power
production
protection
repairing
safety
saw
service
spark
spin
steel
technology
tmt
tool
welding
work
worker
workshop