This makes the effective network topology look like what mathematicians call a tree : a graph where there 's no more than one path between any two points .
这中做法令实际生效的网络拓扑结构比较接近数学家所谓的“树”:任意两个节点之间只有少于等于一条通路。
It kind of seems to me to be at the same level as using mathematical knot theory or topology to justify crossing your fingers when you 're making a wish .
就我看来,这就像用数学的扭结理论或者拓扑学来论证你许愿时交叉手指一样困难。
The desire to escape the mathematical headaches caused by such transformations is one motivation for string theory , which allows smooth changes in the topology of space-time , says greene .
格林认为,渴望避开这类转变所带来的数学难题是弦理论的目的之一,该理论允许时空拓扑内的平滑变化。
This device uses a sharp point mounted on a vibrating cantilever , which scans the surface of a sample and reacts to topology and the properties of the sample to provide highly detailed images .
此设备使用尖锐点振动悬臂,它会扫描样品表面、拓扑结构和样品的属性,以提供非常详细的图像。
Companies designed their network topology to keep as much data traffic as possible in their lans , both to avoid depending on a third party ( the telephone company ) and to avoid paying for long-distance bandwidth .