短语词组短语recumbent overturned fold 伏卧褶皱;几乎水平的倒转褶皱recumbent t fold 伏卧褶皱;伏卧褶曲recumbent fold trap 伏卧褶皱圈闭intraformational recumbent fold 层内伏卧褶皱recumbent fold -thrust system 平卧式褶皱逆冲推覆 返回 recumbent fold