id	keyword
cana-557	laser
cana-557	welding
cana-557	power
cana-557	beam
cana-557	steel
cana-557	metal
cana-557	material
cana-557	aluminium
cana-557	copper
cana-557	alloy
cana-557	reflectivity
cana-557	technology
cana-557	penetration
cana-557	analysis
cana-557	surface