角的顶点
2.The vertex of the angle created by the intersection of rails in a frog or switch.
3.The point on a triangle or pyramid opposite to and farthest away from its base.
5.On the Geometric Idenities Combining in Volving the Vertex Angles of Two Simplexes and Its Applications
6.Let G be a simple and connected graph with n vertices and H be the line graph of G. Denote D and A be the diagonal matrix of vertex degrees and the adjacency matrix of G, while DH and B be the diagonal matrix of vertex degrees and the adjacency matrix of H, respectively. Let U=diag(dudv:uv∈E(G)) be a diagonal matrix.
7.The structure and pertormance of vertex chamber of BESⅡ are described. It covers 95%×4π of solid angle with the spatial resolution of σ r? ≈100μm and σ z ≈2mm respectively.
9.an angle formed by three or more planes intersecting at a common point (the vertex).
