Each port on a switch that uses the Spanning-Tree Protocol has one of five states, Figure.

Select ports are part of the spanning tree , the designated ports . Non-designated ports are blocked.

选指定端口和非指定端口, 非 指定端口被阻塞.

A multi-stage planning approach considering uncertainty is put forward based on improved minimum-cost spanning tree algorithm.

为了在规划过程中考虑负荷的不确定性,提出了一种基于改进最小生成树算法的多阶段不确定性规划方法.

This topology is the spanning-tree of the network.

这种拓扑是扩充树的网路.

At this point Spanning tree has fully converged.

这时生成树成功聚合.

PRA approach applying on bio-diversity conservation start from the Caohai international cooperation project.

贵州的参与性自然保护源于草海项目的开始.

Many results show that disturbance is sometimes helpful for increasing bio-diversity and conservation.

适度的干扰可以促进生物多样性和生物资源的保护.

This paper discusses the bio-diversity and its conservation and utilization in the Diancangshan Mountain Nature Preserve.

该文论述了点苍山自然保护区生物多样性及其保护利用对策.

Objective : To investigate the relation between bio-diversity and quality of Chinese Medicinal Materials.

目的: 探讨生物多样性中药材质量的关系.

Based on this, relative measures for bio-diversity conservation are proposed.

提出保护植物多样性应采取的措施.

This provided advance study and brought forward the high removes resolution and frequency diversity.

提出用高分辨率和频率分集解决多径效应问题.

But habitat loss threatens to erase much of this ecological diversity.

但是,栖息地的丧失正威胁着那里的生态多样性.

In biology class, our professor is teaching us about ecological diversity.

生物学课上, 教授正教我们关于生态多样性的知识.

The D 4 R diversity receiver provides outputs in the same configurations.

接收器的D4R多样性提供的产出在同一配置.

Meantime , the space diversity combining ( SDC ) technique is exploited to further perfect the systems performance.

并采用空间分集合并 ( SDC ) 技术进一步完善其上行链路性能.

Multi-receive antennas can also provide the diversity gain for LLR information and iterative extrinsic information.

多接收天线可以对判决似然比和迭代译码的外部信息提供分集增益,从而进一步提高系统性能.

Over independent Rayleigh fading channels, this scheme can achieve the maximum diversity gain receive antennas.

在独立瑞利衰落信道情况下, 能够实现满分集增益.

Space-Time coding is a coding technique to achieve the diversity gain of multiple antennas system.

时空 编码是一种可以从多重天线系统中得到分集增益的编码技术.

This invention can effectively obtain higher diversity gain.

本发明可以有效的获得更高的分集增益.

There was no significant difference of diversity index between the tree layer and the shrub layer.

乔木层与灌木层之间多样性各项指标总体无显著差别.

Both the species richness index and diversity index of the community were low.

群落物种丰富度和多样性指数低.