1) spanning sub-graph
扩张子图
2) graph extension
图的扩张
1.
It turns out that they are in fact a class of graph extension problems which are also proposed from a great variety of topics, such as graph minors, VLSI designs, interconnection networks and even molecular biology.
本文从图论观点着重讨论两种统一途径：图的标号及图的扩张。
3) Euler characteristic number
扩张函子
4) meridional expansion
子午扩张
1.
In turbofan engine\'s design,the structure with a large meridional expansion was used between HP and LP turbine,and this structure has brought the difficulty for the low pressure turbine design.
在涡扇发动机的设计中,高低压涡轮过渡段处多采用较大子午扩张的结构,此结构给低压涡轮设计带来了难度。
2.
As two common flow characteristics, the upper endwall separation and strong upper endwall secondary flow have great impact on the aerodynamic performance of large meridional expansion turbines.
大子午扩张涡轮易发生外端壁流动分离,并产生较强顶部二次流。
5) vertex-multiplication graph
顶点扩张图
1.
Literature review indicates that some researchers tended to classify the vertex-multiplication graphs corresponding to third-order connected astatic graphs into three categories,and made the hypothesis that the category-Ⅲ graph does not include the vertex-multiplication graph corresponding to the connected astatic graph with its diameter being at lest 3.
文献[1]将3阶以上的连通无向图的顶点扩张图按照其最小定向直径分为三类,并给出了如下猜想:直径至少为3的连通无向图的顶点扩张图不属于第三类图。
6) extended digraph
扩张有向图
补充资料：图的减缩图(或称图子式)
图的减缩图(或称图子式)
minor of a graph
图的减缩图(或称图子式)【.皿以ofa脚户;MHHoPrpa中a」【补注】设G是一个图(graph)(可以有环及多重边).G的一个减缩图(nullor)是从G中接连进行下述运算而得的任何一个图: i)删去一条边; 五)收缩一条边; 说)去掉一个孤立顶点. NRobe由on与P.D.Se脚aour的图减缩定理(脚Ph nl的。r theon习11)如下所述:已知有限图的无穷序列G，，GZ，…，则存在指标i
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