1) undirected connectedness
无向连通性
1.
In this paper, the concepts of circuit α-diagonal dominant matrices and undirected connectedness of matrices are introduced; the classical Brualdi s results for the nonsingularity of matrices are extended; some necessary and sufficient conditions for a circuit α-diagonal dominant matrix to be an H-matrix are obtained.
引入回路α 对角占优矩阵和矩阵的无向连通性概念,推广了关于不可约矩阵非奇异性的Brualdi定理,得到回路α 对角占优矩阵为H 矩阵的充要条件。
2) connected weight unordered graph
连通赋权无向图
3) database
[英]['deɪtəbeɪs] [美]['detə'bes]
单向连通
4) 8-adjacent connection
八向连通
5) cross connection
横向连通
6) lateral communication
侧向连通
补充资料:单连通和多(复)连通超导体(simplyandmultiplyconnectedsuperconductors)
单连通和多(复)连通超导体(simplyandmultiplyconnectedsuperconductors)
单连通超导体一般指的是不包含有非超导绝缘物质或空腔贯通的整块同质超导体,若有非超导绝缘物质或空腔贯通的超导体则称为多(复)连通超导体。从几何学上讲,在超导体外表面所包围的体积内任取一曲线回路,这回路在超导物质内可收缩到零(或点),且所取的任意回路均可收缩到零而无例外,则称单连通超导体。若有例外,即不能收缩到零,则称多连通超导体。例如空心超导圆柱体,则在围绕柱空腔周围取一回路就不能收缩为零。多连通超导体可有磁通量子化现象(见“磁通量子化”)。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条