同义词
1)vertical angles,对顶角2)an opposite vertical angle,对顶角3)opposite angles,vertical angles,对顶角4)vertically opposite angles,对顶角5)duiding,对顶6)opposite vertex,对顶7)steel pipe opposite jacking,钢管对顶8)Opposite Pipe-Jacking Construction,对顶施工9)opposite vertexes,对顶点10)dui ding ge,对顶格
