Twinspan , dca and diversity indices can be used in street grassland type analysis and the results accord with the fact Twinspan和dca以及多样性指数可以运用于街道绿地类别的分析，结果与实际情况比较符合。
Firstly , dca cut sequences in original family at a position near to their midpoint , and two new subfamilies of shorter sequences are obtained 首先， dca将原序列集在中点附近切断，得到两个含较短序列的序列子集。
Several examples are shown and the alignment results produced by lss - dca are compared systematically to the results of six other alignment programs 用几个序列数据对lss一dca程序进行验证，对齐结果与其它的6个对齐程序进行比较。
The ecological relationship of species , community and environment in elaeagnus mollis communities were studied by using twinspan and dca 本文应用twinspan分类和dca排序相结合的方法，研究了翅果油树群落的物种、植物群落与环境的生态关系。
The progressive method to compute lsses is so strictly that it is very possible to find no lss in sequences , which leads to fail of dca procedure 这种严格的渐近算法十分可能导致不能发现序列集中的相似片段，这将导致dca过程不能进行下去。
However , such schemes generally requires complex and centralized control . in our work , we integrate the ad hoc networks into the cellular networks 动态信道分配策略( dca )能弥补fca的缺陷，但dca通常需要非常复杂的中心控制，造成较多的设备冗余。
The ecological relationship between vegetation and environment was analyzed by using twtnspan and dc a . 19 associations were produced by twinspan 应用twinspan和dca相结合的方法对湿地植被的生态关系进行研究， twinspan的结果将湿地植被分为19个群丛。
To mitigate such a shortcoming , dca schemes have been proposed , in which the pool of channels can be dynamically assigned to a cell depending on its current traffic level 传统的蜂窝网采用静态信道分配策略( fca ) ，使得系统设备和信道分配工作变得非常简单。
Since the survey was introduced , the number of dca - related complaints has been on a downward trend , indicating that ais have strengthened their oversight of dcas conduct 调查推行以来，有关收数公司的投诉数目一直下降，显示认可机构已加强对收数公司行事手法的监察。
In the conduct of business with these bodies , cad s experience is that the existing post titles of dca and ddca do not properly reflect their status , duties and responsibilities 民航处过往与这些组织往来的经验显示，处长和副处长的英文职称未能适当反映他们的地位、职务和责任。
