機器
blade
circle
circular
construction
cut
cutter
diamond
disc
disk
electric
engineering
equipment
flash
grind
grinder
grinding
hand
house
industrial
industry
iron
light
man
manual
manufacture
manufacturing
material
metal
power
professional
profile
protection
repair
roof
roofer
roofing
rooftop
round
safety
saw
sheet
spark
speed
steel
structure
technology
tool
work
worker