機器
紡錘
accuracy
alloy
blade
circle
cnc
cut
die
disc
disk
electric
engineering
equipment
factory
flash
grinder
grinding
hand
industry
iron
labor
labour
lathe
light
manual
manufacturing
mechanic
metal
milling
part
power
precision
production
safety
saw
spark
speed
steel
technical
technology
tool
turning
welding
wheel
work
worker
workshop