stepra继代
stepn.步骤;台阶;舞步;步伐v.踏;以步测量
step into the job-market初涉职场
Stephania brevipedunculatan.短梗地不容
step height interferometer阶跃高度干涉仪
STEP DRILLS WITH HEX SHANK
Stephanodiscus carconensisn.车轮冠盘藻
step up the responsibility提高责任
step-less speed variator无级变速
stepless voltage regulator无级调压器
stepwise subdivided method逐次分半法
step and repeat projection步进重复投影