无特征的

Plants involved in this association are most of the terricolous plants. The fungi related are classified in six genera of order Glomales, they are Glomus, Sclerocystis, Acaulospora, Entrophospora, Gigaspora and Scutellospora.

参与丛枝菌根形成的植物是大多数的陆生植物，参与丛枝菌根形成的真菌是隶属于球囊霉目6个属的真菌，即：球囊霉属、硬囊霉属、无梗囊霉属、内养囊霉属、巨孢囊霉属和盾巨孢囊霉属，它们共同的典型特征是在宿主根皮层细胞中能够形成树状的分支，即丛枝。

In the computer vision analysis system of wood across compression,early wood cell,latewood cell,wood ray cell and resin canal cell were recognized and classified automatically byusing neural network technology,applying the function of network recognition and the learningfunction of self-organizing and self-adapting,and wood tectonics feature were taken down byinstructed-learning or uninstructed-learning.

在木材横纹压缩计算机视觉分析系统中，采用了人工神经元网络技术，并运用人工神经元网络的网络识别功能和自组织、自适应的学习功能，通过有导师或无导师学习来记忆所学习过的木材构造学特征，实现了对针叶材管胞中的早晚材细胞、木射线细胞和树脂道细胞进行自动地识别与分类。

In this thesis, we analyze the zeroth order term of eigenpolynomial of linearized matrix, and a necessary condition for diffusion-driven instability of n-species of a reaction-diffusion system is attained by using the Routh-Hurwitz criterion.

本文我们讨论含有n(。23)个物种的反应系统，对系统在无扩散时稳定的平衡态解附近线性化，通过分析线性化矩阵特征多项式的零次项，根据Routh一Hurwitz准则，得到了零次项使系统产生扩散驱动不稳定性的必要条件。

Firstly, it is found that there are many obvious differences between Acorus and Araceae. Their differences are based on many aspects which include characteristics of morphology, anatomy and epidermis of leaf, types of tapetum in anther walls , patterns of endothecial thickenings, and ways of development of endosperms, presence or absence of perisperm, components of photochemistry, and sequences of rbcL.

研究表明：1。菖蒲属与天南星科其它属在叶的形态、结构、表面特征，花药绒毡层类型，药室内壁增厚的特点，胚乳的发育方式，外胚乳的有无，植物化学成分，rbcL基因序列等多方面存在着显著的差异。

The invention provides a method for homopolymerizing conjugated dialkene or co-polymerizing conjugated dialkene and monovinyl aromatic hydrocarbon. The method comprises the following steps: the conjugated dialkene is homopolymerized or the conjugated dialkene and the monvinyl aromatic hydrocarbon are co-polymerized randomly. The method is characterized in that at least one alkali metal alkoxide compound expressed by the formula is used as a structure regulator; in the formula, R is linear chain or branched chain alkylidene radical having 1 to 10 carbon atoms; M is alkali metal selected from Li, Na, K, Rb and Cs.

本发明提供了一种使共轭二烯烃均聚或者使共轭二烯烃与单乙烯基芳烃共聚的方法，包括在阴离子聚合条件下使共轭二烯烃进行均聚或者使共轭二烯烃与单乙烯基芳烃进行无规共聚，其特征在于采用至少一种式所示的碱金属醇盐化合物作为结构调节剂，其中R为具有1-10碳原子的直链或支链亚烷基；以及M为选自Li、Na、K、Rb和Cs的碱金属。

II is characterized by mechaelectronic, including arrent, PLC PLC technology, temperature control technology, the new shaftless technology, more and more extensive production line for the binding of the machine the increasing degree of automation, flexibility and makes it easier and more simple equipment operation, adjustment and more convenient is the trend.

以机电一体化为特征，包括变频调速技术、PLC可编程序控制技术、温度控制技术、无轴传动的新技术，越来越广泛的用于胶订生产线，机器的自动化程度越来越高，灵活性越来越大，使得设备的操作越来越简单，调整越来越方便是大趋势。

Based on the traditional theory of cartographic generalization,this paper has proposed a relatively systematic,scientific and practical model of quantity selection of spatial objects.

从理论上阐述了GIS环境下无级比例尺矢量数据信息压缩与复现的基本原理与方法，对地图制图综合的本质特征及空间地理信息量随比例尺变化的增减规律进行了系统的分析。

There were only 94 vascular plant species, belonging to 50 family and 75 genera. The dominant species in the communities were deciduous broadleaf species Liquidambar formosana, Robinia pseudoacacia, Ailanthus altissima, Acer buergerianum, and Celtis sinensis, evergreen broadleaf species Cinnamomum camphora and Elaeocarpus glabripetalus, and Phyllostachys heterocycla. Robinia pseudoacacia+Cinnamomum camphora community had the highest Shannon-Wiener index (1757) and Phyllostachys heterocycla+Acer buergerianum community had the highest Simpson index (0163), but no consistency was observed between the curves of H and D. For vertical structure, most communities had no significant understory stratification.

结果表明：辰山植物区系以泛热带和北温带占优势，具有典型亚热带和温带成分交汇和南北植物分布交错特征；但保育区内种类单一，维管束植物仅有49科69属94种；主要群落是以枫香、刺槐、臭椿、三角枫和朴树等为优势树种的落叶阔叶林，以香樟和秃瓣杜英等为优势树种的常绿阔叶林，以及毛竹林；物种多样性普遍较低，Shannon-Wiener多样性指数最高为刺槐+香樟群落（1.757），Simpson均匀度指数最高值为毛竹+三角枫群落（0.163）；多样性指数曲线和均匀度指数曲线不具有一致性的变化趋势；多数群落垂直结构中无明显林下分层现象；演替前期的落叶乔木种群后续个体不足。

The lemur-like skeleton features primate-like characteristics, including grasping hands, opposable thumbs, clawless digits with nails, and relatively short limbs.

这种象狐猴一样的骨骼特征类似灵长类，包括爪形手、可对立的拇指、带指甲的无爪指和相对短的肢体。

The French philosopher Jacque Derrida is the founder of Destructionism Theory and the Ruassian philosopher Bakhtin is the creator of Carnival Poetics. With Derrda's major destructive key words, diffěrance, la dissěmination and the basic principle of Derrda's Character Theory, I analyse the destructive tactics of Wulitou Comedy Movies throughout its conceiption, narration, and performance.

本文重点结合法国德里达的解构主义理论和前苏联巴赫金的狂欢化诗学理论，从&延异&、&播撒&等几个解构主义重要概念，以及作品的艺术思维、人物形象、体裁修辞、作品世界几方面的狂欢化特色来具体分析无厘头影片喜剧性的的解构与狂欢特征。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。