機器
blade
building
circular
construction
cut
cutter
danger
drill
electric
engineering
equipment
factory
grinder
grinding
hand
heat
hot
industrial
industry
iron
light
man
manual
manufacture
manufacturing
material
mechanic
metal
metalworking
power
production
professional
safety
saw
sawing
spark
steel
technical
technician
technology
tool
welding
wheel
work
worker
workshop