機器
angle
blade
circle
circular
construction
craftsman
cut
cutter
danger
disc
electric
engineering
equipment
factory
fix
fixing
flash
grind
grinder
heat
hot
industrial
industry
iron
job
maintenance
manual
manufacture
manufacturing
mechanical
metal
power
preparation
professional
protection
renovation
repair
rotate
safety
spark
sparkles
steel
technical
technology
tool
welding
wheel
work
workshop