英文關鍵字
chip
coolant
cooling
scene
pan
tool
drilling
drill
hole
process
machine
milling
plant
cutter
equipment
factory
operation
workshop
metalwork
metalworking
machining
processing
tooling
cut
manufacturer
manufacture
metal
automation
machinery
production
manufacturing
industry
industrial
technology
mill
boring
cutting
work
operating
fabrication
shop
floor
steel
material
professional
worker
man
hand
parts
working
concept