Stepen施特彭stepn.步骤；台阶；舞步；步伐v.踏；以步测量step-up coil升压线圈stepping tiner步进定时器step direction搜索方向step generator级信号发生器step-recycle分段回流step item cost措施项目费step labyrinth阶梯式迷宫密封step-up gear增速传动装置stepping device步进装置step on the gasvi.加快(加快马力；赶快)