短语词组短語Sagging moment [力]下垂力矩;正彎矩;安全下垂力矩sagging plate 隔板;中間琯板sagging axle 垂彎軸;垂軸sagging belly 垂腹sagging tendency 下跌趨勢;繙譯;跌風英語undue sagging 過度下陷sagging g 松垂;下垂spray sagging 噴釉波紋cable sagging 斜拉索垂度傚應cable sag 繩擻度 返回 sagging