機器
blade
circular
company
construction
cut
detail
disc
electric
equipment
factory
grind
grinder
grinding
hand
heavy
industrial
industry
iron
job
join
labor
labour
light
man
manual
manufacture
manufacturing
mechanical
metal
operator
overalls
person
power
production
protection
repair
rotate
safety
saw
spark
spin
steel
technical
technology
tool
trained
turning
work
worker