叠加

叠加	dié jiā	to superimpose / to layer / to overlay / to superpose
叠	dié	variant of 叠
叠	dié	variant of 叠
叠	dié	to pile up / (bound form) repeated / to fold / classifier: stack, pile (of thin objects) / classifier for repeated sections in a musical composition
加	Jiā	Canada (abbr. for 加拿大) / surname Jia
加	jiā	to add / (math.) plus / to increase; to augment / (used before a disyllabic verb, often after an adverb like 不, 大, 稍 etc, to indicate that the action applies to sth previously mentioned, as in 稍加改良 "make some minor improvements to (it)")