stepra继代
stepn.步骤;台阶;舞步;步伐v.踏;以步测量
step-by-step simulation步进模拟,逐步模拟
step by step central office步进制电话局
step-by-step refirement[计] 逐步求精法
step-up pulse transformer升压脉冲变压器
stepless voltage regulation无级调压
Step and Repeat Image Order设置重复排版次序
step and repeat photography步进重复照相术
step out of narrow confines走出狭隘的圈子