機器
angle
blade
builder
carpenter
circular
construction
cut
cutting
danger
disc
electric
engineering
equipment
fabrication
factory
flash
grinder
hand
hard work
industrial
industry
instrument
job
man
manual
manufacture
manufacturing
mechanic
metal
power
production
protection
round
safety
saw
spark
speed
steel
structure
technical
tool
turning
using
welding
wheel
work
worker
working
workshop