groinn.腹股沟；交叉拱；弧棱；防波堤v.做成穹棱；造防波堤groin vault两筒正交相贯穹顶,穹棱拱顶groin works丁坝工程groined slab井字形梁板groined arch穹棱拱groined roof穹窿屋顶groin hernia腹股沟疝groined ribs交叉穹肋Groin weight粒重groined vault交叉穹顶,穹棱拱顶Groin filling籽粒灌浆