機器
blade
circle
circular
construction
cut
cutting
disc
disk
electric
energy
engineering
equipment
factory
fire
flash
gas
grind
grinder
heat
hot
industrial
industry
iron
light
manual
manufacture
manufacturing
mechanical
metal
metalwork
power
precision
production
protection
round
safety
saw
sheet
spark
steel
technical
technology
tool
welder
welding
wheel
work
worker
workshop