triangular 三角的,三角形的 square or trigonal double-sided inserts. 正方形或三角形双面插页(或散页)广告。 ■(chiefly Biology)triangular in cross section (主生)三棱的,横断面呈三棱的 large trigonal shells. 大型三棱贝壳。 ■of or denoting a crystal system or three-dimensional geometrical arrangement having three equal axes separated by equal angles that are not right angles 三方晶系的
派生 trigonally adverb 语源
late 16th cent.: from medieval Latin trigonalis, from Latin trigonum (see trigon)