英文關鍵字
process
boring
hole
material
brass
tool
drill
tail
parts
machine
heavy
shaft
chuck
precision
cutter
tube
turning
lathe
mechanical
cutting
manufacturing
lathing
workshop
metal
engineering
metalworking
manufacture
machining
operation
industrial
technology
drilling
turret
center
metalwork
factory
carbide
finishing
manufacturer
turn
instrument
industry
insert
production
cut
tooling
machinery
processing
bore