cascadesn.叶棚；瀑布名词cascade的复数形式.cascaden.瀑布；[电]串联v.瀑布似地落下；（将 ... ）连结；串联cascade concept瀑布学说cascade profile叶型cascaded systems级联系统cascaded control级联式控制cascade tripping串级跳闸,逐级跳闸cascaded network级联网络cascade bunching级联聚束cascade conveyer阶式运输机cascade spillway阶梯形溢洪道,阶形溢洪道cascade response级联反应