id	keyword
bjos-8640821	materials
bjos-8640821	abrasion
bjos-8640821	erosion
bjos-8640821	surface
bjos-8640821	roughness
bjos-8640821	degradation
bjos-8640821	storage
bjos-8640821	hardness
bjos-8640821	table
bjos-8640821	composites
bjos-8640821	dent
bjos-8640821	effect