【计】 category theory
sort; class; classify; assort; divide; label; staple; system
【计】 categories; categorization; category
【化】 classification
【医】 classifieation; grouping; systematization; systematize; typing
【经】 classification; classifying; group; sort
frame of reference; theoretics; theorization; theory
【化】 Rice-Ramsperger-Kassel theoryRRK; theory
【医】 rationale; theory