機器
background
blade
circle
circular
closeup
construction
craft
cutting
diamond
disc
disk
electric
engineering
equipment
factory
foundry
grind
grinder
hand
industrial
industry
knife
light
machinery
machining
making
manufacture
manufacturing
metal
safety
sharpener
sharpening
spark
speed
steel
stone
surface
technology
tool
welding
wheel
work
worker
workshop