英文關鍵字
area
automatic
beige
board
cautious
comply
cut
device
equipment
factory
folow
hands
industrial
machine
machinery
marker
marking
material
measure
measures
mechanism
motor
natural
observe
operation
part
pencil
piece
plan
plank
plant
position
precaution
preform
producer
production
protective
quick
raw
rule
safety
sawing
uniform
wood
woodworking
work
worker
write
zone