機器
big
blade
circle
circular
construction
cut
cutting
diamond
disc
disk
electric
engineering
equipment
factory
flash
grind
grinder
hand
industrial
industry
iron
light
manual
manufacture
manufacturing
mechanic
metal
part
power
production
rod
rotate
round
safety
saw
spark
sparks
speed
spin
steel
technical
technology
tool
wheel
work
worker
workshop