系统树

With scheduling algorithms FIFO,the communication model is set up and network elements' arrive curves and service curves are derived for a switched industrial Ethernet model with two levels' tree topology.Then,analytic expressions of the worst case end-to-end delay,buffer size and output burstiness are presented,the maximum network delays of real-time data are calculated based on derived results.

针对FIFO调度算法，对两级树型拓扑结构的交换式以太网系统建立了通信模型，推导出各网络元素的到达曲线和服务曲线，由此得到了最大时延、所需缓冲区大小、输出突发量等实时业务流的主要参数解析表达式；利用推导所得结论计算了实时业务流的最大网络时延。

The similarity among songs from different habitats was analyzed by ANOSIM, SIMPER and MDS. Significant differences among Shu Yi Area, Chung Hsing University , and Taichung Metropolitan Park were found. The results of dendrogram- cluster analysis indicated the songs of Chinese bulbul had smaller dialect systems in the same site.

经由ANOSIM、SIMPER与MDS相似度的分析，白头翁歌曲在树义地区、中兴大学与台中市都会公园间呈现显著差异；从dendrogram-cluster analysis的分群结果，发现白头翁歌曲呈现更小规模的方言系统。

The course contains four sections as follows: mathematical logic (including basic concepts of propositional logic and predicate logic, propositional calculuses and inference theories), set theory (including set algebras, relations, functions and cardinal numbers), algebraic structure (including algebraic systems, semigroups and groups, rings and fields, lattices and Boolean algebras), graph theory (including basic concepts of graph, Euler graphs and Hamiltonian graphs, trees, planar graphs and coloring graphs, some special vertex subsets and edge subsets).

本课程包含四部分内容：数理逻辑（包含命题逻辑与一阶逻辑的基本概念、等值演算以及推理理论），集合论（包含集合代数、二元关系、函数和基数），代数结构（包含代数系统、半群与群、环与域、格与布尔代数），图论（包含图的基本概念、欧拉图与哈密顿图、树、平面图及图的着色、图的某些特殊的顶点子集与边子集）。

The rooting difficulty of Catalpa bungei was lies in nutrient supply weak, different hormones regulation unsuitable and enzymatic defense system not perfect enough.

楸树扦插生根困难可能在于其营养物质供应较弱、不同激素配合和调控不足、酶促防御系统不够完善。

The result of the molecular phylogenetic tree showed that the genetic relationship were close among human, monkey and chimpanzee, and between Norway rat and house mouse, but the genetic relationship were relative far between dog, cattle and house mouse.

分子系统进化树结果显示，人、猕猴、黑猩猩之间以及挪威鼠和家鼠之间的亲缘关系较近，而狗、牛与家鼠间的亲缘关系较远。

Read the documentation for your HTTP server and check with your local system administrator to find the directory where CGI scripts should be installed; usually this is in a directory cgi-bin in the server tree.

阅读你的 HTTP 服务器文档，以你的本地系统管理员检验查找 CGI 脚本应该被安装的文件夹；通常在你的服务树的 cgi-bin 文件夹中。

Chinaberry tree samples showing witches' broom were collected in Danzhou, Hainan Province. Using universal primers Rl6mF2/Rl6Mr1 for phytoplasma 16 S rDNA, a fragment of about 1.4 kb was amplified, cloned and sequenced from the DNA samples extracted from the diseased Chinaberry tree.

利用植原体16S rDNA通用引物对Rl6mF2/Rl6mR1，通过PCR技术从表现典型丛枝症状的苦楝植株总DNA扩增到约1.4 kb的特异片段，将此片段克隆后进行序列测定、分析及系统关系树构建。

The popular methods of remote sensing image classification have been generally analyzed and summarized. And the main methods are classification based on statistic, neural network classification, fuzzy classification, decision tree classification, expert system classification. Finally, the characters of each method have been summarized.

现综合分析了目前主要的遥感图像分类方法，将遥感图像分类方法归纳为：基于传统统计分析的分类方法、神经网络分类方法、模糊分类方法、决策树分类方法、专家系统分类方法，并对各种方法的应用情况进行了综述，并总结出各种分类方法应用特点。

Combined with the improved EZW algorithm proposed in (4), the whole framework of this coder is given.

给出了自适应选取阈值判定运动估计是否成功的方法，并结合(4)中给出的改进零树编码算法设计了该系统的流程图。

After analysis of multiple sequences alignment, phylogenetic tree and similarity of sequences, it was shown that Ac-ASP has similar relation with Am-ASP, and shared high homology with other Hymenopteran and Coleopteran. From above analysis, we firmly suggest Ac-ASP1 and Ac-ASP2 belong to OBPs family and Ac-ASP3 belong to CSPs family.

通过多序列联配、系统发育树及序列相似性分析，Ac-ASP除与西方蜜蜂Am-ASP亲缘关系较近(相似性达到80％以上)外，与其它膜翅目以及鞘翅目的OBPs及CSPs也有一定的亲缘关系(相似性达到30～60％)，且Ac-ASP1和Ac-ASP2应为OBPs，Ac-ASP3则应为CSPs； 4。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。