機器
blade
caution
circle
circular
construction
cut
diamond
die
disc
electric
engine
equipment
facilities
factory
fix
gloves
grind
grinder
hand
heavy
industrial
industry
iron
light
man
manual
manufacture
metal
operator
overalls
person
production
protection
round
safety
spark
sparks
spin
steel
technical
technology
tool
trained
treatment
turning
wheel
work
worker
workshop