機器
angle
background
circle
circular
closeup
cnc
construction
cut
cutter
danger
detail
diamond
disc
electric
electrical
engineering
equipment
factory
grinder
grinding
hand
headset
industrial
industry
iron
machinery
manual
manufacture
manufacturing
metal
object
operation
power
production
rotation
safety
saw
sparks
speed
steel
technology
tool
welder
welding
wheel
work
worker
workplace
workshop