叠层

叠层	dié céng	repeated layers / stratified / laminated / stacked / piled strata
叠	dié	variant of 叠
叠	dié	variant of 叠
叠	dié	to fold / to fold over in layers / to furl / to layer / to pile up / to repeat / to duplicate
层	céng	to pile on top of one another / layer; stratum / floor (of a building); story / (math.) sheaf / classifier for layers