機器
arc
assembly
bending
closeup
construction
conveyor
crane
cutting
cylinder
equipment
factory
gas
hardware
heating
hydraulic
industrial
industry
iron
leaflets
longitudinally
lsaw
machinery
manufactory
manufacturing
mechanical
metal
modern
molding
overhead
perspective
pipe
pipeline
plate
press
production line
roll
roller
round
seam
sheet
steel
submerged
tackling
technology
tube
unfinished
water
welded
welding