分档器; 分节器
Stepper \Step"per\, n. One who, or that which, steps; as, a quick stepper.
stepper n 1: a professional dancer [syn: {hoofer}] 2: a motor (especially an electric motor) that moves or rotates in small discrete steps [syn: {stepping motor}] 3: a horse trained to lift its feet high off the ground while walking or trotting [syn: {high stepper}]