Stepka斯乔普卡stepn.步骤；台阶；舞步；步伐v.踏；以步测量step by step selector步进制选择器step-test procedure分级试验法,逐级试验法,逐步试验法stepless transmission无级传动,无级变速器Stepwise active fault断层分段式活动step speed regulation有级调速stepping motor driver步进电机step ageing treatment分级时效处理Stephan's slate valvestep by step dialogue层进式对话step-traced antenna步进跟踪天线