英文關鍵字
beam
burn
burning
cleaner
cleaning
cleanliness
corrosion
device
dirt
equipment
flow
future
gray
handheld
high
human
industrial
industry
innovation
instrument
laser
light
machine
machinery
man
manufacturing
material
metal
metallic
modern
new
noncontact
people
person
process
pulse
ray
removal
remove
remover
rust
rusty
sparks
steel
surface
technician
temperature
tool
treatment