英文關鍵字
accuracy
automated
automation
carbide
circular
closeup
construction
coolant
cut
cutter
cutting
detail
disc
electric
electrical
engineering
equipment
factory
grinder
hand
industrial
industry
iron
lathe
liquid
machanical
machine
machining
macro
man
manual
manufacturing
mechanical
metal
metalwork
mill
milling
power
process
production
saw
shavings
steel
technology
tool
tooling
turning
work
worker
workshop