機器
angle
blade
circle
circular
construction
craft
cut
disc
disk
electric
engineering
equipment
factory
fire
flash
gloves
grind
grinder
grinding
hand
industrial
industry
iron
job
light
man
manual
manufacture
manufacturing
metal
pipe
power
production
protection
repair
safety
saw
spark
sparks
speed
steel
technical
technology
tool
welding
wheel
work
worker
workshop