成层

成层	chéng céng	layered / stratified
成	Chéng	surname Cheng / short name for Chengdu 成都
成	chéng	to succeed / to finish / to complete / to accomplish / to become / to turn into / to be all right / OK! / one tenth
层	céng	to pile on top of one another / layer; stratum / floor (of a building); story / (math.) sheaf / classifier for layers