retracev.重描;折回;追溯
retracement line后视线
retrace transformer逆程变压器
retrace brightening在回扫过程中的增亮
retrace one's steps壅水计算
retracement channel撤通道
retrace one's steps to冰壅回水
retrace characteristic(扫描的)回描特性,回程特性曲线
retrace characteristics回描特性
retraced their steps.追溯他们的足迹
retrace one's past actions供回水立管