Terms for subject Shipbuilding containing step

English	Chinese
ascending luminance steps	上升亮度阶梯
back current step	反向电流级
brightness step	亮度梯度
frequency division step	分频级
hand brake master step	手闸轴托
implement step by step	逐步实施
multiple-step planing boat	多断级滑行艇
single-step planing boat	单断级滑行艇
step by step method	循序渐进法
step-servo motor	步进伺服电动机
velocity reducing steps	减速级