英文關鍵字
abrasive
angle
approaching
art
craft
craftsman
design
detail
device
edge
edges
employee
equipment
factory
form
glass
grind
grinder
grinding
hand
handling
handmade
industrial
industry
instrument
machine
man
master
material
metal
moving
part
pattern
piece
polish
polishing
processing
production
rotating
round
small
tool
using
white
worker
workshop