id	keyword
brj-22610	pigments
brj-22610	restoration
brj-22610	surface
brj-22610	kaiping
brj-22610	diaolou
brj-22610	fig
brj-22610	doi
brj-22610	aging
brj-22610	mpa
brj-22610	china
brj-22610	raman
brj-22610	humidity
brj-22610	color
brj-22610	layer