機器
angle
blade
cable
carpentry
circle
circular
communication
cut
danger
disc
disk
electric
electrician
engineering
equipment
factory
flash
grind
grinder
hand
industrial
industry
insulation
iron
job
light
manual
manufacture
manufacturing
metal
metallic
part
power
production
protection
repairing
rotate
safety
saw
steel
technology
tool
welding
wheel
work
worker
working