【计】 singular set
naught; nonexistence; not; nothing; without; lack; zero
【医】 a-; leipo-; lipo-; non-
head; principal; initial; first
attach; fasten; tie; corollary; series; system; department; feel anxious
relate to
【计】 Coset
【医】 series; system; systema
【经】 ratio control