查询词典 plant structure

Show model combines growth model, math model and VR technologies to design the proper object structure of each organ of virtual plant. First of all,research background, research content of virtual plant area and Virtual Reality technology are introduced. The concept of VR and research content of virtual plant are defined. Secondly, we analyze math model of virtual plant, including Bezier curve, NURBS curved surface, fractal system, L-system and Catenary curve. Thirdly, we give show model of virtual plant in detail. Finally, the design of the platform and growth model on XML script is introduced , and how to show the virtual plant in the platfrom is discussed too.

本文首先介绍了虚拟植物领域的研究背景、研究内容和虚拟现实技术，明确了虚拟现实的概念和虚拟植物的研究范畴，然后介绍了虚拟植物器官的数学模型，对各个器官展开了拓扑结构分析，建立有针对性的数学模型，先后介绍了Bezier曲线，NURBS曲面，分形系统，L-系统和悬链线曲线，接着详细分类介绍了虚拟植物器官的显示模型，最后介绍了虚拟作物平台的设计，平台中基于XML脚本的生长模型，以及虚拟作物在作物平台中的显示。

It was suggest that the yield of tobacco in unit area was significant increasing and the quality was improved along with the altitude increase in Liuyang tobacco area. The tobacco leaves production at the place where the altitude from 400 meter and 900 meter was propitious to postpone the bearing period and growth and development of tobacco plants. It was the base of maturation endurance and could advance the tobacco leave maturation degree of all parts of tobacco plant. And it could hasten the orange tobacco leave ratio of the whole tobacco plant. It was boosted leaves unwrapping of top tobacco plant and the statuses of tobacco leaves, especially the top leaves, were significantly improved. The tissue structure of all parts leaves on tobacco plant were more loosen and the colour and luster of tobacco leaves was more vivid. The nicotinamide content in top leaves were digressive at a certain extent, on the contrary, the contents of the reductive sugar and kalium were increased at different extent. At the same time, it was benefit to play down the pesticide rudimentai of tobacco leaves and increased security of tobacco leaves.

结果表明：在浏阳烟区随着海拔高度的增加，单位面积烟叶的产量有着明显的增加，烟叶质量也有一定程度的改善；在海拔400—900m的地方进行烟叶生产，有利于延长烟株大田生育期，有效缓解浏阳烟区7、8月份的高温逼熟现象，有利于烟株的生长发育，为养好烟株的耐熟性打下良好的基础、促进各部位烟叶成熟度的提高；同时可以有效的促进烟株各部位橘黄烟叶比例的上升，对上部烟叶的开片也有着明显的促进作用，烟叶身份特别是上部烟叶的身份得到明显的改善，各部位烟叶组织结构更加疏松，烟叶色泽更加鲜亮；上部烟叶烟碱含量在一定程度上有所降低，各部位烟叶还原糖、钾含量有着不同程度的增加烟叶香气特征更加明显；香气量有一定程度的增加，吸位更加醇和、余味舒适；同时也有利于减少烟叶的农药残留量，提高烟叶的安全性。

In order to simulate the morphology structure of plant,a plant morphological structure model is proposed.

为模拟真实植物的具体外观形态，提出了一种植物形态结构表达模型。

Botany A small, thin, usually dry, often appressed plant structure, such as any of the protective leaves that cover a tree bud or the bract that subtends a flower in a sedge spikelet.

鳞苞：一种小而薄的，通常是干的紧贴植物结构，如任一种覆盖树苞的保护性叶片或莎草属植物的小穗中包住花朵的苞片

Knowledge of plant structure was confined to exomorphic aspects and to a very elementary outline of endomorphic features.

植物构造的知识局限于外部形态和很初步的内部轮廓方面。

In resent years, along with mending the regulation of plant-structure, Zizania caduciflora is cultivated more and more, and the vegetable market is enriched mostly.

近年来，随着我国农业种植业结构调整进程的加快，茭白的种植范围和面积迅速扩大，对丰富蔬菜市场供应起到了积极作用。

Complete genome sequences of 20 viruses in Bunyaviridae loaded from NCBI were analyzed by two biological softwares of DNAMAN and DNASTAR. The results indicated great variability in both nucleic acid sequence and protein structure between plant viruses and animal viruses:(1) only plant viruses could encored NSm in M genome;(2) the length of nucleic acid sequence and protein sequence was different;(3) GC content of nucleic acid of animal viruses was higher than plant viruses of that;(4) protein topology analysis by online software SMART discovered that there was significant difference for the structure of glycoproteins G(subscript nG between animal-infecting and plant-infecting viruses;(5) usually, protein of plant-infecting virus had more complicated structure, more low compositional complexity and had N-Signal peptides except INSV.

本文从NCBI数据库下载具有完整基因组序列的布尼亚科病毒的5个属20种病毒的序列，用生物学软件DNAman，DNAstar进行比对分析，发现布尼亚科病毒属中的植物病毒在核酸序列及蛋白结构上与动物病毒有很大差异：(1)只有植物病毒的M基因组能编码NSm运动蛋白；(2)植物病毒和动物病毒在核酸序列和蛋白质序列长度均有差异，表明该科病毒是进化速度较快的病毒；(3)植物病毒核酸序列的GC含量低于动物病毒；(4)通过SMART网络软件进行蛋白质拓扑结构分析发现植物病毒和动物病毒在糖蛋白GG的结构上存在显著差异；(5)植物病毒糖蛋白结构较为复杂，有较多的紊乱区域，除INSV外，其他病毒都具有N端信号肽。

Centre for the tall plant structure, natural lighting and open line of sight, the construction of 50 German Bauhaus architectural style.

中心建筑为高大工厂结构，自然采光、视线开阔，建筑为50年代德国包豪斯建筑设计风格。

For more information about Fabricators, light alloy , plant structure, Building construction or Structural steel engineering please call the company C P INDUSTRIETECHNIK GMBH CO KG SACHSEN.

KG是一家诚信的、效能的生产商和服务商，该公司提供新型的、门的产品，例如桥梁工程、量建筑、梁结构，地上建筑，轻金属结构，钢结构高层建筑。

For more information about Fabricators, light alloy, plant structure, Building construction or Structural steel engineering please call the company C P INDUSTRIETECHNIK GMBH CO KG SACHSEN .

KG是一家诚信的、高效能的生产商和服务商，该公司提供新型的、专门的产品，例如桥梁工程、较量建筑、桥梁结构，地上建筑，轻金属结构，钢结构高层建筑。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。