英文關鍵字
automated
bit
black
build
close
construction
cooling
cutter
drill
drilling
engineering
equipment
factory
gray
hard
hole
industrial
industry
instrument
ironworker
isolated
labor
lathe
locksmith
machinery
machining
macro
making
man
manufacture
mechanical
metal
milling
people
perforate
power
process
production
sharp
shavings
shiny
silver
single
smith
steel
strength
technology
tool
work
worker