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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。

The frame of 28 or 29 is formed by two-dimensional highly undulated simple layers of (6,3) topology that catenate in a parallel fashion to give, for the first time, a three-dimensional overall network, instead that a usual two-dimensional one.

首次将二维高度起伏的具有(6， 3)拓扑结构的简单层，通过一种平行方式相互铰链，广延成一种三维聚合网络结构。

Catgut is a large tennis center line, which features can give you first-class feel, but because of natural causes, but also by the humidity and temperature, the durability of not particularly good.

羊肠线是众多网球线中间的一种，它的特点是可以给你提供一流的手感，但是因为是天然的原因，同时也受到湿度和温度的影响，耐久性也不是特别好。

At first, we give someelementary conception and properties of Novikov-Poisson Algebras, we elaborate on thegeneral conclusions about central extension and universal central extension in thechapter three.

我们首先给出了Novikov-Poisson代数的一些基本概念和性质，在第三章中详尽地阐述了中心扩张和泛中心扩张的一般结论。

The paper consists of three parts. First, we give the calculation for every order central moment for the Logistic population, mean vector and covariance matrix of the order statistic of random sample from the Logistic population, and means of several special functions for the order statistic of random sample from the Logistic population. Secondly, we discuss the parameter estimation for the Logistic population. Finally, we solve the question about the goodness-of -fit test for the Logistic population.

研究的主要内容分三部分：第一部分是关于Logistic总体各阶中心矩、样本次序统计量期望向量与协方差阵及若干个特殊的样本次序统计量函数期望的计算问题；第二部分是关于Logistic总体分布参数的估计问题；第三部分是关于Logistic总体的拟合优度检验问题。

The author of the winning work will have to give original in hand or by mail certified properly protected to the organization of the contest during the first fortnight of May.

13获奖作品的作者会以原来的手或邮寄证明适当的保护，在5月第2周的比赛组织。

No new year's day, to celebrate; no choc'late covered candy hearts to give a way. no first of spring; no song to sing.

如今，用现代的眼光来回味当时的歌词，更感受到一种朴实无华的纯真境界。

Give me six hours to chop down a tree and I will spend the first four sharpening the axe.

如果给我六个小时去砍一棵树，我会首先用四个小时磨我的斧头。

The litany begins with the call for mercy upon God the Father, God the Son, and God the Holy Ghost, in the "Kyrie eleison","Christe eleison", Kyrie eleison. Then, considering Christ as our Saviour and Mediator, we ask Him to hear us. In order to render more secure the hearing of our prayers, we again ask each of the Persons of the Holy Trinity for mercy, and, adding those titles which give us a claim to Their consideration, we call upon the First Person: God, the Father of Heaven, to whom we owe existence and life; the Second: Redeemer of the world, to Whom we owe our salvation; the Third: Holy Ghost, to whom we owe our sanctification; and then on the Holy Trinity, one God.

该一长串开始呼吁怜悯的上帝，父亲，上帝的儿子，和上帝圣灵，在" kyrie eleison "，" christe eleison "， kyrie eleison ，然后考虑以基督为我们的救主和调停，我们问他听到我们的，以使更安全的听证会我们的祈祷，我们再次要求每个人的圣三一为怜悯，并加入这些书籍，这给我们一个声称他们的考虑，我们呼吁第一人：上帝，父亲的天堂，向谁，我们有责任的存在和生活；第二：救赎的世界，向谁，我们有责任我们的拯救；第三：圣灵，向谁，我们有责任，我们成圣；然后就圣公会圣三一，一上帝。

In this paper, we first study the game chromatic number on graphs, and then we give some examples for the lower bound about the game chromatic number of the planar graphs.

首先全面分析了图的点对策着色问题，对某些定理的下界，给出了具体的例子。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。