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  立地
    A Study on Long-term Site Productivity of Different Forest Types in Jiulongshan Mountain
    九龙山不同森林类型立地长期生产力研究
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    FOREST SITE CLASSIFICATION AND FOREST PRODUCTIVITY——CLASSIFICATION AND EVALUATION OF SECONDARY FOREST SITE IN MAOER MOUNTAINS
    森林立地分类与森林生产力——帽儿山次生林立地分类和评价
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    A REVIEW OF THE STUDY OF FOREST SITE CLASSIFICATION
    森林立地分类研究评介
短句来源
    APPLICATION OF REMOTE SENSING TECHNIQUES IN THE FOREST SITE SURVEY
    遥感技术在立地类型调查中应用的研究
短句来源
    APPLICATION OF A FUZZY METHOD TO EVALUATING SITE QUALITY
    立地类型质量评价中的模糊方法研究
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  地点
    Progeny Test for the Open-pollinated Families of Loblolly Pine with Multiple Site
    火炬松自由授粉子代多地点试验
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    Photos with the size of 1280×960 are taken with the camera (FUJIFILM FinePix6900Zoom) moving between the two ends of the fixed bracket or with the camera bracket moved from one site to another. Then the camera parameters are resolved.
    通过对本文所采用的FUJIFILM FinePix6900Zoom数码相机在固定支架滑动和不同地点搬动进行重复性拍摄大小为1280×960图像,然后进行摄像机标定参数求解。
短句来源
    The individual heritabilities of narrow sense were 0 001 and 0 074, 0 080 and 0 144, 0 068 and 0 137, 0 108 and 0 609, 0 052 and 0 252, and 0 058 for height, diameter at breast height, volume, density, straightness, wind resistance (only single site), respectively, across two sites.
    两块测定林中 ,树高、胸径、材积、基本密度、通直度、抗风性的单株狭义遗传力分别为 0 .0 0 1和 0 .0 74、0 .0 80和 0 .144、0 .0 6 8和 0 .137、0 .10 8和 0 .6 0 9、0 .0 5 2和 0 .2 5 2、0 .0 5 8(单地点 )。
短句来源
    The growth in Northern subarea was the best in Dailing region, and the heritabilities of subarea, site/subarea and family/site/subarea were respectively 0.836, 0.537 and 0.365.
    亚区、地点 /亚区、家系 /地点 /亚区遗传力分别为 0 .836 ,0 .5 37,0 .36 5。
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    STUDIES ON THE GENETYPE x ENVIRONMENT INTERACTION AND GENETYPIC STABILITYOF CHINESE FIRI. Analysis of the Genetype x Site x Year Interaction of Chinese Fir
    杉木遗传型×环境互作和遗传稳定性的研究——Ⅰ.杉木遗传型×地点×年分互作的分析
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  “site”译为未确定词的双语例句
    STUDY ON EVALUATION SITE QUALITY PINUS KORAIENSIS ARTIFICIAL FOREST IN YICHUN REGION
    伊春林区红松人工林立地质量评价的研究
短句来源
    THE STUDY ON MASSON'S PINE FOREST SITE TYPE DIVISION IN JIANGXI PROVINCE
    江西省马尾松林立地类型划分研究
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    PRACTICAL FORMULAS FOR EVALUATING SITE INDEX OF FOREST LAND
    评定林地地位指数的实用公式
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    Site Quality Evaluation for Chinese Cryptomeria Plantation.
    柳杉林立地质量评价
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    STUDY ON THE RELATIONSHIP BETWEEN CHEMICAL ELEMENTS IN FOREST SOIL AND SITE FACTORS
    森林土壤化学元素与环境因子关系的研究
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  site
Therefore, van der Waals' interactions between acetylcholinesterase and these drugs are stronger than those between butyrylcholinesterase probably due to a small active site gorge and a significant peripheral anionic site for acetylcholinesterase.
      
Novel 5-substituted esters and homologous ester and amido derivatives of 4,5 dihydro-3,3-diethyl-2(3H)-furanone were synthesized and evaluated for anticonvulsant activity in rodents and for affinity to a site on the GABAA receptor complex ([3H]TBOB).
      
The results showed that these compounds are capable of important interactions with the NNRT binding site, which encouraged us to submit them for biological assay.
      
From these data, it may be deduced that the administration of high concentration of 18-methyl norethindrone can displace ketoprofen from its secondary binding site.
      
This work attempts to calculate the binding-site number using fluorescence spectroscopic method with bovine serum albumin (BSA) and Indo-1 as protein and ligand models, respectively.
      
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1、The most important point of reforestation in the saline and alkaline soil dis- trict is, first of all, to understand the conditions of the habitat form of planting area. In accordance with the different conditions of habitat form, the principle of right species in tbe right site and the rational composition of plantation, the plant percent is promoted. 2、Based upon the conditions of climate, topography and soil, such three main factors as the amount of salt in soil, the water level of soil and the texture...

1、The most important point of reforestation in the saline and alkaline soil dis- trict is, first of all, to understand the conditions of the habitat form of planting area. In accordance with the different conditions of habitat form, the principle of right species in tbe right site and the rational composition of plantation, the plant percent is promoted. 2、Based upon the conditions of climate, topography and soil, such three main factors as the amount of salt in soil, the water level of soil and the texture of soil may be used as references in classifying the conditions of habitat form. The salt con- tent is divided into four groups: less than 0.3%, 0.3--0.5%, 0.5--1% and more than 1%; the water level of soil is classified into two classes: one is more than I meter, other is less than 1 meter; the texture of saline soil is grouped into three classes: heavy clay, sandy loam-clay loam, light loam-medium loam. Total in all there are eleven conditions of habitat form. 3、On the most especially heavy saline soil (the salt content is more than 1%) no reforestation is avaitable or plant Tamarix juniperina, Populus euphra- tica after the soil is transformed into less salted. On the heavy saline soil (the salt content is more than 0.5--1%) plant Tamarix juniperina, Populus euphratica and Populus canadensis. On the favorable saline soil (the salt contlnf is 0.3- 0.5%) Tamarix, Amorpha fruticosa, Poplus euphratica, Populus canadensis, Ulmus pumila, Salix mastudana, Elaeagnus erispa, Fraxinus americana, Robinia pseudo-acacia may be planted. On light Ealine soil (the salt contlnrt less than 0.3%) Aitan- thus altisslma, Ziziphus jujub, Morus alba, Phellodendron amurense, Thuja orientalis may be panted besides those species mentioned above.

作者分析了营口地区盐渍土的土壤植被条件,提出以土壤盐分含量、地下水位和土壤质地作为立地条件的主要因子,将该地区的造林立地条件划分为十一种类型。进一步分析了该地造林树种的生物学特性,按不同立地条件类型分别提出了适宜的造林树种。

1、In the eastern mourntain region of Liaoning province, there were many areas of natural growth which were destroyed long pears ago by natural or artifial force. These devastated forest sited after ten or tweney years are regenerated into sapling wroods of seconalary forest. 2、Classifying the types of thess secondary forests aceording to the following four principles: a) The mountain site: as altitude, slope and quality of the site etc. b) The social conditions. c) The association of forest plarts....

1、In the eastern mourntain region of Liaoning province, there were many areas of natural growth which were destroyed long pears ago by natural or artifial force. These devastated forest sited after ten or tweney years are regenerated into sapling wroods of seconalary forest. 2、Classifying the types of thess secondary forests aceording to the following four principles: a) The mountain site: as altitude, slope and quality of the site etc. b) The social conditions. c) The association of forest plarts. d) The management of the forest and economical conditions. 3、These principles abost the classifying type of the secondary forest are right- fully adopted in the eastern mountain region of Liaoning province.

作者根据辽宁东部山区的自然历史、社会条件及次生林的特点,讨论了国内外林学家划分山地森林的原则,认为可应用苏氏林型学说,综合考虑地型、土壤、植物群落及社会条件等因子,来具体划分次生林林型。在次生林型分类上可采用植被区、垂直植被带、林型组及林型等四级系统,用地形、植被及优势树种三名法命名。

1、The constitution of the quick-growing and good harvest forest of Populus canadensis consists of the form of planting composition and planting distance. It de- termines the nursing and leaves' space, large or small, of forest tree, hence it in- fluences the amount of out-pat aud quality of timbers. There are differeut opinions to the proper constitution. To study it is very important. 2、In foreign countries the constitution of poplar forest is quite different. The form of planting is sometimes square or rectangle....

1、The constitution of the quick-growing and good harvest forest of Populus canadensis consists of the form of planting composition and planting distance. It de- termines the nursing and leaves' space, large or small, of forest tree, hence it in- fluences the amount of out-pat aud quality of timbers. There are differeut opinions to the proper constitution. To study it is very important. 2、In foreign countries the constitution of poplar forest is quite different. The form of planting is sometimes square or rectangle. Some countries adopt close plant- ing, and others adopt open. In general, square and rectangle are adopted in artificial forest of Populus canadensis, while triangle planting is rearly used. A tendeucy is to use close planting. There are 400 to 40,000 planting thocks in per hectare. The difference is 100--times. 3、The rational close planting of Populus canadensis is right triangle aud square, because in such condition the orown may be normally developed, and striaght bole maintained. In the oircumstances of the same planting distance, the right triangle planting site produces 15.5% more products than thesquare (planting). Populus canadesis is a very intolerant species with high adaptability and de- mands water more than fertilizer. As the climatical and soil conditions are favourable, especially water is available and guaranteed, the density of planting may be deter- mined according to the following factors: (1) In eccordance with the table of the average height and diameter of tree in relating to the planting distance, at the first intermittent cutting, to resolve the planting distance: As the average height and diameter of the tree is known, at the first intermittent cutting, the corresponding rational distance of the first planting will be then easy found out from the table. on the other hand, the square value of the normal growing crown is used as a standard to determine the nursing spare and planting distance. In the mean time the first intermittent cutting year may be ob- tained. (2) To find out the rational close of planting by means of the soil fertility and the intensity of managenient: When the condition of soil fertility and water is suitable and the intensity of management is high, the trees grow fast the crown clo- sure is quick, open stocked in first planting is all right, dsing 3.5 × 4--6 × 6 M. in distance. If the condition of site is not good the site should be planted first close then open, using 1.3 × 1 .5--3 × 3 M. in distance promoting the crown in early closure, then thinning and transplanting the seedlings to the open site or plan- ting shrubs or farm crops between the rows of planting. (3) To find out the rational close of planting by means of the year and stan- dard of planting stocks: At the same conditions of site and management, one year seedlings or slips are used in close planting. While 2--3 year seedlings, 3--4 meters in height, are used in open planting. First close planting then open, as the plant- ing stocks grow 1--2 years 1ater, the dense stocked seedlings should be thinned and transplanted in the near by planting area. Then both sites become open stocked forests.

加拿大杨速生丰产林的结构应着重研究杨林的配置方式和造林密度,因为它决定林木营养面积和叶面积你大小,从而影响椽木的产量和质量。作者建议采用正三角形或正方形配置,提倡稀植,每公顷277—714株,或者先密后稀,早期疏开。确定造林密度的因子,首先是依据第一次间伐时平均树商、平均胸径号造林密度关系表”确定造林密度,同时试用冠幅的平方值,作为计算林木营养面积的依据;第二是依据土壤肥力(特别土壤水分)专经营强度确定造林密度;第三是依据苗木年龄及规格确定造林密度。稀植加杨林,15年成林时,预计高达22米,胸径35厘米,每公顷木材蓄积量240—360立方米。

 
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