【化】 natural radionuclide
【化】 natural radiation
hilum; nucleus; putamen; stone
【医】 caryo-; caryon; core; karyo-; karyon; kernel; nidi; nidus; nuclei
nucleo-; nucleus
a few; count; enumerate; fate; frequently; list; number; numeral; numeric
reckon; repeatedly; serveral
【计】 crossing number; N
【医】 number
【经】 number