基本解释等角拱词组短语短語equilateral circular arch 等邊圓拱Gothic equilateral pointed arch 哥特式等邊尖拱Equilateral pointed arch 等邊尖拱gothic arch equilateral pointed arch 哥特式等邊尖頂拱equilateral arch更多词组专业释义土木建築工程等邊拱