機器
bar
blade
build
builder
carcass
circular
close
concrete
construction
constructor
contractor
cutter
cutting
disk
equipment
form
grinder
hard
hollow
industrial
industry
iron
laborer
lattice
man
manual
metal
metalwork
monolith
reinforcement
reinforcing
rod
safety
saw
sawing
site
spark
sparkle
square
steel
tube
up
wear
wire
work
worker