【计】 SS
synchronism
【计】 geostationary; in-phase; in-sync; S; synchronization; synchronizing
synchrony
【化】 synchronism; synchronizing; timing
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