英文關鍵字
acrylic
plastic
cutting
process
laser
machine
burst
hot
flames
head
white
smoke
materials
industry
action
automatically
beam
black
closeup
dangerous
detail
energy
equipment
extreme
close
factory
flash
fume
generator
gun
gush
highlights
light
job
maker
manufacturing
material
metal
motion
movies
old
power
production
professional
radiate
radiation
ray
sharp
shine
sparkle
technology
tool
videos
working