steppa干草原
stepn.步骤;台阶;舞步;步伐v.踏;以步测量
step and repeat multiplication步进重复倍增
Stepwise discriminant analysis逐步判别分析
stepping hydraulic microdriver步进液压微型推进器
stepless speed regulation lathe无级调速车床
Step atmospheric layers vehicle跨大气层飞行器
Steps were heard approaching.听到脚步声走近。
step-by-step cut-off test逐步截尾试验
step resistance type tide gauge分级电阻式潮汐计