機器
blade
box
chop
circle
circular
circular saw
construction
construction industry
cut
cutting
diamond
disc
electric
electrical
engineering
equipment
factory
flash
grated
grind
grinder
grinding
hand
industrial
industry
iron
light
man
manual
manufacture
manufacturing
mechanic
metal
power
production
protection
saw
sawing
spark
speed
steel
structure
technical
technology
tool
welding
wheel
work
workshop