短语词组短語recumbent overturned fold 伏臥褶皺;幾乎水平的倒轉褶皺recumbent t fold 伏臥褶皺;伏臥褶曲recumbent fold trap 伏臥褶皺圈閉intraformational recumbent fold 層內伏臥褶皺recumbent fold -thrust system 平臥式褶皺逆沖推覆 返回 recumbent fold