機器
blade
circle
circular
construction
craftsmanship
cut
cutter
disc
disk
electric
electrical
engineering
equipment
factory
fix
flash
grind
grinder
industrial
industry
iron
light
manual
manufacture
manufacturing
mechanic
metal
part
power
production
protection
rotate
round
safety
saw
sawing
spark
speed
steel
structure
technical
technology
tool
treatment
turning
welding
wheel
work
workshop