機器
abrasive
arm
blade
borer
circle
circular
construction
cut
die
disc
disk
drill
electric
equipment
factory
flash
grind
hand
industrial
industry
iron
lathe
light
manual
manufacture
manufacturing
metal
part
power
radial
repairing
rotate
rounding
safety
saw
sharpen
sharpening
spark
speed
steel
technical
technology
tool
turning
welding
wheel
work
worker
workshop