(Meteorology)a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period. Physics a curve or formula representing a physical system at constant pressure (气象)等压线
(Physics)each of two or more isotopes of different elements, with the same atomic weight (物理)同量异位素
派生 isobaric adjective 语源
mid 19th cent.: from Greek isobaros 'of equal weight', from isos 'equal' + baros 'weight'