機器
abrasive
accuracy
circle
circular
cnc
construction
cut
detail
diamond
disc
disk
electric
engineering
equipment
fabric
factory
flash
grinder
grinding
hand
industrial
industry
iron
labor
light
machinery
manual
manufacture
manufacturing
mechanic
metal
power
production
protection
safety
saw
spark
speed
steel
technical
technology
tool
treatment
turning
welder
welding
wheel
work
worker