機器
accuracy
automatic
automotive
background
carbide
circle
circular
closeup
cnc
construction
cylindrical
diameter
die
disk
dressing
engineering
factory
fire
fluid
gloves
grinding
hand
hole
hot
industrial
industry
inside
inspection
machinery
male
man
manufacture
manufacturing
metal
micron
part
precision
programing
protection
safety
shaft
steel
surface
technology
tool
water
wheel
work