树木的

This web site provides information about trees, such as arboreous benifits, arboriculture, pest problems, dangers trees confronting. There are also including periodicals, reports, documents, index, and agenda of the institute, etc.

该网站提供了树木的相关信息，如树木的益处、树木栽培、虫害问题、树木面临的危险等，还有期刊、快报、文献、相关索引、该学会日程安排等。

Thomas Swetnam is a dendrochronologist at the University of Arizona—in other words, he studies the recent past through the medium of tree rings.

Thomas Swetnam 是一位来自亚利桑那大学的树木年代学家，他通过研究树木的年代来研究过去。

Introduction about concepts of tree, dendrology, and major study objectives relative to the science.

介绍树木学、树木的概念，树木学研究的对象。

Dendrology provides students knowledge on trees necessary by forest management, silviculture, ecology, natural reserve conservation and wildlife protection, plant resources and their utilizations. So it is important for students studying forestry to learn knowledge about trees in classification, biological and ecological characteristics.

森林资源管理、退耕还林、林业生态工程、森林保护、植物资源及林产品开发利用等都离不开树木学知识，因此，作为林学的学生必须了解树木的分类、树木的生物学、生态学特性等方面知识，以便为这些课程的学习以及将来的工作提供基础。

Because the various countries' national condition and the geographical position are different, Arbor Day is not same in the various countries' name and the time, like Japan is called "the tree knag" and "the afforested week"; Israel calls "trees' new year date"; Burma is called "the tree-planting month"; Yugoslavia is called "the tree-planting week"; Iceland is called "the student to plant trees Japan"; India is called "the national Arbor Day"; France is called the national trees date "; Canada is called "the forest week.

由于各国国情和地理位置不同，植树节在各国的称呼和时间也不相同，如日本称为"树木节"和"绿化周"；以色列称"树木的新年日"；缅甸称为"植树月"；南斯拉夫称为"植树周"；冰岛称为"学生植树日"；印度称为"全国植树节"；法国称为全国树木日"；加拿大称为"森林周。附件：你需要登录或注册后才能查看。

In addition,the ideal working parameters were provided based on the research of working parameters and the object of pruning robot.During the research,a test system based on force sensor was developed,the friction coefficients between tyre and standing tree trunk of arborvitae,ginkgo and acacia were measured by the test system.This paper provides important data for the power selecting of pruning robot.

同时，对整枝机的工作参数、对象进行研究，提出了整枝机的合理工作参数，设计了一套测试系统；采用测力传感器测定整枝机系统轮胎与树木的作用力，计算出了轮胎与树木之间的摩擦系数；测定了侧柏、银杏、刺槐等几种主要树木的摩擦系数，为整枝机的动力选择提供了重要的依据。

This webpage systematically introduced Tibet's macro fungi of 45 families, 175 genera and 588 species, including 415 species of edible fugi, 135 kinds of poisonous fungi, 238 species of medicinal fungi, 168 kinds of fungi which proved to boast anti-cancer medical effect, 188 species of ectotrophic mycorrhiza, and 123 species which make trees and wood decomposed and ill.

该书收集了西藏地区的大型经济真菌45科、175属、588种。本书记述的食用菌415种，毒菌135种，药用真菌238种，其中有抗癌作用或试验抑制肿瘤的168种。树木的外生菌根菌188种。能分解纤维素、木质素并引起树木木质腐烂或树木病害的123种。

Abstracts:Ash beech borer dies once a year.Its young worms decays drill in oleaceae ash plants of the genus phloem and xylem and makes the tree bark longitudinal crack or collapse and even cause trees death. and wither.

摘 要：白蜡窄吉丁虫在沈阳地区，主要以幼虫在木樨科梣属树木的韧皮部与木质部间钻蛀危害，使树皮纵裂或崩开，导致树木枯萎死亡。

The satellite images may not show what the farmers are using the trees for, but trees provide nuts, fruit, wood and other products.

哪些卫星图片也许没法显示农民是如何利用树木的，但是树木可以提供坚果，水果，木材和其他产品。

Growth models of virtual trees include morphological structural models, functional models and functional-structural models. Functional-structural models may simulate the interaction between trees and its environment, whose outputs are 3D structure of trees. Therefore, functional-structural models are more close to realistic tree growth process and lead the trend of tree growth modelling.

虚拟树木生长模型包括形态结构模型、功能模型和结构－功能模型等，其中结构－功能模型可以模拟树木与环境间的相互关系，其结果为树木的三维结构，因此它最为接近现实树木的生长，是虚拟树木生长模型的发展方向。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐