查询词典 systematic tree

The Bodhi tree at Anuradhapura, Sri Lanka is considered not only as the oldest tree in the world but also as the only tree in the world having an authentic history.

於是这棵被移种在斯里兰卡阿努拉达普拉城的菩提树，就成为了这个世界上最古老的树，同时也是这个世界上唯一具有著真正历史的树。

The project team has taken loess, lacustrine and peat sediments and tree ring as the research carrier, a systematic study has been carried on the warm phases of the different period (60-25 ka, last deglaciation, Holocene, the recent e few hundred years) and the last interglaciation on the basis of the extensive field investigation and laboratory analysis.

项目组以黄土、湖沼和树轮等沉积物为研究载体，经过大量的野外考察和实验室分析测试，对我国半干旱带末次间冰期和距今六万年以来不同时间段的温暖期（6万年到2.5万年、末次冰消期、全新世、最近几百年）进行了系统的研究，取得了一批重要的阶段性成果，确认了东亚季风气候和温暖期的不稳定性特征。

The main purpose of careful observations on external appearance and internal anatomy is to throw light on the evolution of the modem family Pinaceae:To Pinus, attention is paid to the relation of different subgenera, sections and subsections; to Pseudoaraucaria and Pityostrobus, through analysis of the extinct types, trying to clear the evolution relations among all genera so as to finish the systematic tree is of most importance. Currently there are two hypotheses, i.e. Pinus center theory and Pseudoaraucaria branch theory.

对松科化石球果进行细致的外部形态及内部结构的研究主要目的在于演化关系的探讨上：对于Pinus，主要探讨这个属内各个亚属、组、亚组之间的演化关系；对于Pityostrobus和Pseudoaraucaria，通过绝灭类型的分析，探索松科内各个类群的演化关系进而完成进化树是研究的主要方向，现在这方面已有了Pinus中心说及Pseudoaraucaria分支说两个假说。

Themain results are as follows:(1)The utilization-oriented silvicultureshould be regarded as a silvicultural regime or system,that can bestsatisfy the special economic,social or ecological demand for a given regionwith lowest cost and fast speed,using specifically oriented,systematic andadvanced technical measures on the basis of characteristics of tree species,natural and economic conditions and local technical and development levels.

主要研究结果如下：(1)定向培育应该做为一种森林培育制度来对待，即定向培育是根据经济、社会和生态上的特定要求，确定相应的培育目标，然后根据造林地区和造林地的条件，造林树种或树种组合的特性，以及当地经济和技术水平，采用相应专向，系统、先进、配套的培育技术体系，以可能的最低成本和最快速度，达到定向要求的一种森林培育制度。

It's necessary to have a simple and systematic digital model in thinning decision-making. In the paper, the tree location map of 150 m x 30 m Luanta-fir in Hui-Sun Forest Experimental Station were digitized in GIS and thinning simulation by random, Telathaki-Wadali-Chi, DBH class and crown competition index method.

本研究系利用GIS 配合林木位置图，以惠荪林场之150m x 30m 香杉采穗园为研究材料，以生产大径材为目的的考量下，针对疏伐木之选择，利用随机法、寺崎渡氏法、胸径级法、树冠指数法等四种方法加以模拟、评估、探讨。

Typical tree slelction and random sampling were applied for systematic studies on individual variation of gutta-percha content in samaras of Eucommia ulmoides and the correlations between the characters of samara containing gutta-percha and several macroscopic properties.

采用选择典型样株和随机取样的方法，对杜仲果实含胶特性的个体变异规律及其与若干宏观性状的相关性进行了系统研究。

This paper studies the assessment of EPSS systematic, and introduces the current information performance evaluation in various ways, especially analyzes the application of decision tree technology in the evaluation of education. Finally, the article discussed the background and circumstances of revise of EPSS evaluation rubrics, and hopes to do some contribution to the continuous development of EPSS assessment system.

本文主要研究了EPSS系统的评价部分，介绍了目前信息化绩效评价中各种方法，重点分析了决策树技术在教育评价中的应用，最后文章讨论了EPSS评价量规修订的背景和情况，希望能对EPSS评价系统的不断发展有所贡献。

The study of flower culture in China mostly concentrates on general and overall research and elementarily forms a fairly systematic flower culture research system. However there is little research focusing on the branches of the flower culture, which mainly lays great importance on traditional Chinese flowers, especially mei flower, orchid, chrysanthemum, lotus, tree peony, camellia, Begonia, etc.

我国的花文化研究多数集中在总论性的研究方面，初步形成了较为系统的花卉文化研究体系；对于花卉文化的分论性研究不多，主要集中在对中国传统名花的研究上，尤其以对梅花、兰花、菊花、荷花、牡丹、山茶、海棠等研究居多。

One popular teen-agers' Halloween trick was to unroll a roll of toilet paper and throw it high into a tree again and again until the tree was all wrapped in the white paper.

一种流行的十几岁的孩子'万圣节诀窍是摊开的卫生纸卷，将其投入高的树上，直到再树又是所有包裹白皮书。

The content of air pollutants in the leaves of planting tree s can reflect degrees of air pollution and ability of absorbability of planting tree s for air pollutants.

研究结果表明：绿化树种对大气污染具有很强的吸滞能力，并依污染气体和树种的不同具有明显差异。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切