Stepen施特彭stepn.步骤；台阶；舞步；步伐v.踏；以步测量step-coveragen.台阶覆盖Stepp or steppe草原step four paces跨四步step-up ratio变压器升压比,升压比,升高系数steps type seal[化] 台阶式密封step-feed BNR分段进水A/O脱氮工艺Stephania longan.粪箕笃Stepwise curing分步固化stepping method步进焊法step photometer阶梯光度计