英文關鍵字
background
boring
building
chips
control
cutting
detail
drill
drilling
energy
equipment
factory
fray
industrial
industry
iron
isolated
lathe
machine
machinery
machines
machining
man
manipulation
manufacturing
mechanic
metal
metalwork
metalworking
mill
parts
pipeline
precision
press
processing
production
products
recycle
rotate
rust
scrap
sharp
shaving
shavings
steel
technology
tool
turned
turner
turning
valves
vehicle
white
with
work
worker