递加

递加	dì jiā	progressively increasing
递	dì	to hand over; to pass on; to deliver / (bound form) progressively; in the proper order
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)")