stem of tree
英 [stem ɒv triː]
美 [stem əv triː]
【计】树干
双语例句
- Study on the Stem Density Variation of Main Plantation Tree Species in the Muddy Sea-coast in Jiangsu
江苏泥质海岸主要造林树种树干密度变异规律杨树无性系苗期对螨害抗性变异研究 - This paper presents a method that the stem taper curve of standing tree can be estimated with a considerable precision without the taper table.
该文探讨了不用编制削度表直接建立高精度立木干曲线的方法。 - Inspection of the photo scene revealed a small living stem in the region of the tiger tail, which is the only tree in that area.
在拍照现场调查中，发现一个小的活树枝位于老虎尾巴区域，那是那一区域的唯一的树。 - Research on Mechanism of stem brush of Azodrin to control pests in plane tree
久效磷涂茎防治悬铃木害虫的机理研究 - Thrust a rod from its last shoot down the stem; it shall point to the center of the earth as long as the tree lives.
从它初发的嫩枝旁沿茎插一根笔直的杆子；只要这树活着，杆子将一直指着地心。 - Research on Stem Diameter Variation Rule of Apple Tree and Response to Environmental Factors in Northwest Arid Region
西北旱区苹果树茎干直径变化规律及其对环境因素的响应研究 - Stem Sap Flow Dynamics in Relation to Environmental Factors of Main Tree Species in the Eastern Mountainous Region of Northeast China
东北东部山区主要树种树干液流动态及与环境因子关系 - Time lag characteristics of stem sap flow of common tree species during their growth season in Beijing downtown
北京城区常见树种生长季树干液流的时滞特征 - The data for establishing stem volume table of poplar tree were collected from 329 wood samples of the poplar trees in Anhui province.
以安徽省杨树人工林为研究对象，按照立木材积表编制要求，随机抽取329棵杨树伐倒木材积资料。 - However, stem taper and characteristics of tree crown are the main characters controlling the tree resistance to wind/ snow loading.
其中，林木尖削度（胸径/树高）和林分结构特征（树种、组成、密度等）是控制树木和林分对风/雪荷载抵抗的主要特征量。 - Tree stem surface area formula was derived by predicting model with relative height d 0.1. Multiply it by stem mean annual ring with an annual volume growth model of standing tree was then derived. The mean ring width was calculated to mean diameter growth.
本文采用相对高d（0.1）预估模型导出树干表面积式，然后乘以树干平均年轮宽度推出了立木材积连年生长量模型，最后将平均年轮宽度转换成平均直径生长量。 - Methods: Mangiferin contents in root, stem, bark, leaf, branch of mango tree were determinated by HPLC.
方法：采用RP-HPLC法对芒果树的根、树干、皮、叶、枝条等部位进行芒果苷含量测定。 - In, order to tap adequately the potential of stem form improvement and to provide theoretical foundation for mult-generation breeding, the possibility of selecting indirectly for stem form from the tree crown structure was studied.
为了充分挖掘干形改良的遗传潜力和为多世代育种提供理论依据，探讨了从树冠结构方面对干形实行间接选择的可能性。 - There were 66 isolates endophytic fungi were isolated from root, stem and leaf of Gingkgo. The results indicated that there was relationship between endophytic fungi quantity and tree age of Gingkgo, the older was Gingkgo, The more was endophytic fungi quantity.
从银杏的根、茎、叶中分离到66株内生真菌，研究结果表明，内生真菌数量与银杏树龄有关，树龄越高，其含有的内生真菌数量越多。 - In this paper, the three methods were applied to estimate the average density of stem wood and bark, and the differences of the density in different positions of a tree and in different age class were analyzed with dummy variable method.
本文对这三种平均密度估计方法的结果进行了比较分析，并用哑变量方法对树干不同部位、不同龄组之间密度的差异性进行了检验。 - Based on the data from stem analysis and growth ring measurement, regression models of stem volume with DBH and tree height of 70 years Picea asperata plantation were established.
根据树干解析资料，建立了70年人工云杉林的单株材积与胸径和树高的数学模型。 - It was showed by experiments that sapling raising of Gingko biloba with high density could effectively reduce the occurrence of stem rot disease, improve the seedling and sapling quality, increase sapling yield per unit area, and promote economic benefits of sapling raising for this tree species.
采用高密度育苗可有效降低苗木茎腐病的发生，对提高苗木质量有显著效果，并能提高单位面积产量，降低生产成本，增加经济效益。 - From above, such as traits SOD 、 soluble protein and the ratio of root to stem are all closely related to drought resistance of those five tree species.
结果表明：与抗旱性联系紧密的公共通用指标有SOD、可溶蛋白及根冠比。 - Discriminatory Analysis of Stem Forms of Eight Main Tree Species in Shaanxi Province
陕西省8种树种干形的差异分析 - Nutritive Input of Stem flow in Chinese Pine and Sharp tooth Oak Forests and Its Effect on Characteristics of Soil Nearby the Base of the Tree Stems
锐齿栎、油松茎流养分输入和树干基部土壤特性初步研究 - The biologic mechanical attribute of tree is relative with age of tree, intensity of stem, shape and size of stem and crown of tree, and the health of tree;
其中，林木的生物力学特性与树龄、树干强度、树干和树冠的外形和尺寸以及树木健康状况有关； - FAGLU-induced histofluorescence method was used to determine locations of catecholamine-containing neurons ( CA neurons) in the brain stem of Tree Shrew ( Tupaia).
应用FAGLU荧光组化技术观察了树鼩脑干儿茶酚胺神经元（简称CA神经元）的位置分布及其形态特征。 - During the whole growing cycle, bagging effect the stem flow of apple tree in varying degrees and at different periods.
在整个年生长周期，套袋在不同生长发育期对苹果树体茎流产生不同程度的影响。 - Whether there have the stem flow or not in midnight, it was closely connected with quantity of water loss of pear tree in the daytime.
液流的夜间活动状况与梨树在白天的蒸腾耗水量有紧密联系。 - Lots of endophytic bacteria were found in root, stem and leave of tea tree.
初步探明了茶树的根、茎、叶中均存在大量的内生细菌及其分布规律：侧根主根嫩茎叶片。