查询词典 evolutionary tree

The avenue planting of nine cities in Zhejiang has the following characters: 1. Avenue planting tree species are plenty; 2. Avenue planting benefits among the cities are not uniform and tree species used are various; 3. Tree species used for avenue planting are simple and landscape effects unideal; 4. Cultivated manner and stratal structure are simple, ecological benefits no good; 5. The tree species ratio, of evergreen with deciduous, of fast-growing with slow-growing, is out of proportion, and short-term...

通过对浙江省具代表性的9个主要城市行道绿化状况的调查分析，结果表明浙江省城市行道绿化具以下几个特点：①行道树种资源丰富；②城市之间绿化效果差异悬殊，所采用的绿化树种各有侧重；③绿化树种单一，色彩单调，景观效果差；④栽植配置方式单一，层次结构简单，生态效益差；⑤常绿树种与落叶树种、速生树种与慢生树种比例失调，近期效益考虑多，远期效益考虑少。

Main points of this paper are as follows:(1) to explain emphatically and to prove the Jukes-Cantor Model, Kimura Model and the relationships of them;(2) to construct and to prove, using EM algorithm, the theorems of estimating best branches of DNA sequences having censored data for Jukes-Cantor Model under the conditions of rooted tree and unrooted tree respectively;(3) to construct and to prove, using EM algorithm, another three theorems of estimating best parameters of DNA sequences having censored data for Kimura Model under the conditions of rooted tree and unrooted tree.

本论文的重点在于解释和证明Jukes-Cantor模型、Kimura模型及两模型之间的关系；运用EM算法构造并证明Jukes-Cantor模型下含缺损数据的DNA序列构建有根树的最佳分枝长度估计定理；运用EM算法构造并证明Kimura模型下含缺损数据的DNA序列构建有根树的最佳参数估计定理。

Trees growing close to their thermal limit of distribution, such as at high-latitude or high-altitude upper tree-line, react to variations in temperature through its influence on cambial activity. Tree growth was mainly influenced by temperature at the upper tree-line, so there was more temperature information in tree-ring width chronology in middle Qilianshan Mountains.

祁连山中部地区森林上限的树木生长主要受温度变化的影响，年轮宽指数序列中主要包含温度变化信息，对树轮生长影响最大的气候因子为前一年12月～当年4月平均温度。

Cacao tree is a kind of small arbor tree and it has the following outstanding features. First, cauliflory: its flowers burst open on the tree trunks directly and then the flowers will produce fruits on the tree trunks too. The cacao flowers are small, but the fruits are big. The fruits are elliptical and have many ridged lines on the outer skins. The color of the fruits is yellow, and each fruit can grow as heavy as one kilogram. Each cacao plant can grow 60 to 70 fruits, and there are about 30 to 50 seeds in each fruit.

可可是一种有趣的梧桐科小乔木，它最大的特点是&老茎生花&和&老茎结果&，花直接开在树干上，果也直接结在树干上，花小而果实大，果子呈椭圆型，表面有一条条棱形线突出，橙黄色，每个果子重达1千克左右，每株可可树可结60-70个果子，一个果子内有30-50粒种子，巧克力的原材料就是这些种子。

The wind came a faint smell, my breath to bypass efforts to find late spring, Muran Looking back, I realized that the hot Huacheng its presence everywhere, it is difficult to see the banyan tree, Zhejiang, is the year In early summer, stubborn, I must go to satisfy the wish of a child pulling you go to children's playground, and then I saw the lake Nazhu banyan tree, I cling to tree trunks Wawadajiao that two of us do not live so sure that encircle thick trees, so you come to the tree on the other side, holding my hand, trying to pull the other.

风里传来一阵淡淡的气味，我绕过晚春的气息努力寻找，暮然回首，才发现原来炎热的花城到处都是它的身影，那是浙江很难见到的榕树，是那一年的初夏，固执的我一定要去满足儿时的心愿，拉着你去儿童乐园，然后我看到了湖边的那株大榕树，我抱住树干哇哇大叫，说我们两个人肯定合抱不住这么粗的树，于是你走到树的另一边，牵着我的一只手，尽力去拉另一只。

Nowadays most of researches on the multicast routing are how to generate multicast tree. In case of multicast tree failure, there need to re-route all of nodes behind the failure point so much as re-build the whole tree, this will deteriorate Quality-of-Service, on the other hand, it is insufferable in some multicast applications. We proposed a Fault-Tolerant multicast scheme to resolve this problem. Our scheme creates backup paths crosswise in the ramose node. It can reduce additional cost greatly and recover the failure of multicast tree rapidly.

现在关于多播路由的研究大多着眼于多播树的生成，一旦多播树出现故障，就需要对故障点以下的所有多播接收节点进行重新路由甚至对整个多播树进行重新构造，这一方面降低了服务质量，另一方面有些多播应用不允许长时间的中断，对此本文提出了一种多播容错方案，采用在分枝节点之间建立备份路径的措施，可以在很大程度上减少额外的代价，能够在最快的时间内恢复多播树的故障，并使得恢复后的多播树形状基本上没有改变。

Nowadays most of researches on the multicast routing are how to generate multicast tree. In case of multicast tree failure, there need to re-route all of nodes behind the failure point so much as re-build the whole tree, this will deteriorate Quality-of-Service, on the other hand, it is insufferable in some multicast applications. We proposed a Fault-Tolerant multicast scheme to resolve this problem. Our scheme creates backup paths crosswise in the ramose node. It can reduce additional cost greatly and recover the failure of multicast tree rapidly.

现在关于多播路由的研究大多著眼于多播树的生成，一旦多播树出现故障，就需要对故障点以下的所有多播接收节点进行重新路由甚至对整个多播树进行重新构造，这一方面降低了服务质量，另一方面有些多播应用不允许长时间的中断，对此本文提出了一种多播容错方案，采用在分枝节点之间建立备份路径的措施，可以在很大程度上减少额外的代价，能够在最快的时间内恢复多播树的故障，并使得恢复后的多播树形状基本上没有改变。

The turkey ate some cow muck, discover it really gives it enough strength to fly to the first tree branch, the second day, the turkey ate more cow muck again, flying to the second tree branch, 2 after week, turkey proud of flew to a tree crest, but soon, a farmer comes in sight of it, quickly of shotted down from the tree it.

火鸡吃了一点牛粪，发现它确实给了它足够的力量飞到第一根树枝，第二天，火鸡又吃了更多的牛粪，飞到第二根树枝，两个星期后，火鸡骄傲的飞到了树顶，但不久，一个农夫看到了它，迅速的把它从树上射了下来。

In the course of program designing, OLE mechanism and Graph for Windows have been used to generate specific geological triangular chart from computer instead of manual work in before. By using PowerBuilder 7, inquiry through a clue of combination of conditions including structural tree, strati graphic tree, well number tree and sample number tree is realized, which meets the thinking way of geologists.

在程序设计方面，针对岩石名称分类复杂、量化定名烦琐的现状，采用OLE机制和Graph for windows图形工具，对岩石含量数据进行相对数值转换，完成了平面上呈三角形排列的三个直角坐标系统的叠加，避免了人工绘制地质三角图随意性大、精确度低的问题，极大地提高了工作效率。

Main conclusions are as follows:(1) changes of leaf morphological and anatomical structures with tree height:25 researched tree species exhibited xeromorphic structures at tree top,that is,toward tree top,leaves were with 1 increased cuticle thickness;2 developed palisade tissue and even double-palisade structure;3 densely arranged tissue cells;4 smaller cells;5 thicker epidermis,smaller and denser stomata;6 smaller and thicker leaf,great LMA value.

本文主要得出以下结论：(1)叶片结构随树高的变化：研究的25种树种表现为越往树顶处：1角质层越厚；2栅栏组织越发达，全栅特征越明显；3叶组织细胞排列越紧密；4叶肉细胞越小；5表皮层越厚，气孔越小而密、单叶的气孔总面积越小；6叶片越小而厚，LMA越大。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48