isocratic
/ˌaɪsəʊˈkrætɪk/adjective
- Chemistry (of a chromatographic method) involving a mobile phase whose composition is kept constant and uniform【化】（色析法）恒溶剂的。
词源
early 19th cent.: from Greek isokratia 'equality of power' （from isos 'equal' + kratos 'strength'） + -IC.