短语词组短语Sagging moment [力]下垂力矩;正弯矩;安全下垂力矩sagging plate 隔板;中间管板sagging axle 垂弯轴;垂轴sagging belly 垂腹sagging tendency 下跌趋势;翻译;跌风英语undue sagging 过度下陷sagging g 松垂;下垂spray sagging 喷釉波纹cable sagging 斜拉索垂度效应cable sag 绳擞度 返回 sagging