機器
blade
caution
circular
company
construction
craftsman
cut
disc
electric
engine
engineering
equipment
fabric
factory
flash
gloves
grind
grinder
grinding
hand
heavy
industrial
industry
iron
job
light
man
manual
manufacture
manufacturing
mechanic
metal
person
prefabricate
protection
safety
spark
speed
spin
steel
technical
technology
tool
trained
turning
work
worker
workplace
workshop