stator
/ˈsteɪtə(r)/noun
1- the stationary portion of an electric generator or motor, especially of an induction motor（尤指感应电动机的）定子。
1.1
- a row of small stationary aerofoils fixed to the casing of an axial-flow turbine, positioned between the rotors（置于轴流式涡轮机的转子之间的）固定片。
词源
late 19th cent.: from STATIONARY, on the pattern of rotor.