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临界深度
相关语句
  critical depth
     The load critical depth changes from 14 to 18 times of the pile diameter while the cap breadth varies from 1.0m to 1.5m.
     承台板宽从1.0m增加到1.5m时,荷载临界深度由14倍桩长增加到18倍桩长。
短句来源
     From testing results it is found that the critical depth of point resistance (h_(cp)) is 10D, (D: the edge length of pile), the critical thickness of the stratum is 7.5D and the critical depth of shaft resistance of pile (h_(cs)) is also 10D.
     分析试验结果认为,桩端阻临界深度(h_(cp))为10D(D为桩径或边长)临界厚度(t_c)为7.5D、侧阻的临界深度(h_(cs))为10D。
短句来源
     Based on the theory of soil plastic mechanics,a method to calculate the variation of soil resistance with depth during pile installation has been presented,three problems about minimal thickness from pile toe to the top of soft substratum,critical depth of pile toe penetrating into the bearing stratum and variation of minimal thickness or critical depth for different soil stratum have been discussed.
     根据土塑性力学基本原理 ,用空穴球形扩张理论推得了沉桩时沉桩阻力沿深度变化的理论计算方法 ,对有软弱下卧层的桩基持力层、桩尖离下卧层顶面应留的最小厚度 ,无软弱下卧层的桩基持力层、桩尖进入持力层的临界深度 ,以及最小厚度或临界深度在不同土层或土层组合时的差别等三个问题进行了讨论。
短句来源
     The critical depth of wave stired sand is directly related to design construction and usage lifetime of the coastal engineering.
     波浪掀沙临界深度的大小,直接关系到海岸工程的设计施工和使用寿命。
短句来源
     The critical depth of beginning transference of fatigue crack sources and the ratio of thecritical transference depth to the radius of specimen were 0.8mm and 0.27mm respectively.
     疲劳源位置开始转移的临界深度和临界转移深度与试样半径之比分别为0.8毫米与0.27毫米;
短句来源
更多       
  the critical depth
     From testing results it is found that the critical depth of point resistance (h_(cp)) is 10D, (D: the edge length of pile), the critical thickness of the stratum is 7.5D and the critical depth of shaft resistance of pile (h_(cs)) is also 10D.
     分析试验结果认为,桩端阻临界深度(h_(cp))为10D(D为桩径或边长)临界厚度(t_c)为7.5D、侧阻的临界深度(h_(cs))为10D。
短句来源
     The critical depth of wave stired sand is directly related to design construction and usage lifetime of the coastal engineering.
     波浪掀沙临界深度的大小,直接关系到海岸工程的设计施工和使用寿命。
短句来源
     The critical depth of beginning transference of fatigue crack sources and the ratio of thecritical transference depth to the radius of specimen were 0.8mm and 0.27mm respectively.
     疲劳源位置开始转移的临界深度和临界转移深度与试样半径之比分别为0.8毫米与0.27毫米;
短句来源
     (3) the variation of the critical depth and the minimalthickness for two different soil stratum.
     (3)不同的上下土层或土层组合对“最小厚度”或“临界深度”的影响。
短句来源
     Values of p(f) or p(1)/K taken below the critical depth can be correlated with the basic value of bearing capacity σ_0.
     临界深度以下的pf或pt/K可以与地基土的基本承载力σ_o建立关系。
短句来源
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  “临界深度”译为未确定词的双语例句
     By measuring the axial force of the pile shaft, the reference values of critical depths and thickness for σ_u and τ_u in the silty layer are obtained.
     通过桩身轴力量测,获得粉砂层的σ_u及τ_u值各自的临界深度及临界厚度的参考值。
短句来源
     According to the improved model, the possible maximum stress intensity factors (K_Ⅰ)_(max) and (K_(Ⅱ))_(max) are calculated, as well as the corresponding critical crack deepness, the critical crack length and the crack place are determined by applying optimum method.
     Suh所提出的剥层磨损理论中关于裂纹扩展的模型进行了改进。 按改进的模型,利用优化方法,计算了可能存在的最大断裂强度因子(K_Ⅰ)_(max)和(K_Ⅱ)_(max),以及相应的临界深度,临界裂纹长度和裂纹位置。
短句来源
     In the cotton root area 20 ~ 50 cm formation the salt downplay the district, underground water level in the boundary depth below, main root of cotton area salt alkali the degree obviously lower, benefit to the cotton growth.
     在棉花根区20~50cm形成盐分淡化区域,地下水位在临界深度以下,棉花主根区盐碱化程度明显降低,有利于棉花生长。
短句来源
     By analyzing an engineering example, the depth modified coefficient 1.0 of foundation soils' bearing capacity, issued by JGJ79-91, leads to ground treatment, uneffective in the case studied.
     通过一工程实例指出 ,《建筑地基处理技术规范》JGJ79-91地基承载力深度修正系数取 1.0 ,致使粗颗粒土在超过一定临界深度时地基处理是“无效”的 ,因而也是不合理的。
短句来源
     Pile models penetrated into different density fill with different penetrated depth were tested.
     通过试验,观察到桩模在各种不同入土深度和不同填筑密度的砂中,端阻力在临界深度以下均出现似稳值的现象。
短句来源
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  critical depth
In particular, in addition to the classical critical velocity and depth, the higher (second) critical velocity and (second) critical depth can be used.
      
Water depth controls the critical depth acted on by waves.
      
The present paper has not only described the instability process of rockburst more deeply, but also got the critical depth of plastic softening area of chamber that is valuable in the controlling engineering of rockburst.
      
Exceeding a critical depth to diameter ratio, laser-related elemental fractionation processes occur.
      
Second, motion parallax due to self-motion provides the most critical depth information and it can be used to partially compensate for the loss of binocular vision.
      
更多          
  the critical depth
Water depth controls the critical depth acted on by waves.
      
The present paper has not only described the instability process of rockburst more deeply, but also got the critical depth of plastic softening area of chamber that is valuable in the controlling engineering of rockburst.
      
Therefore, it is not true that "the critical depth of groundwater" controls the springtime "eruption" salification in northeast China.
      
An expression for calculating the critical depth ZL was developed.
      
Equations developed for relating the velocity of advance of the wetting front to θi as well as for estimating the value of the critical depth ZL were successfully tested under conditions of uniform distribution of the initial soil water content.
      
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本文根据黄河中、下游各地区排水冲洗试验成果,比较详细地阐述了改良盐碱地的排水设施。针对盐碱地改良的要求,论述了如何确定沟深及有关临界深度的问题,并着重指出粘土层的出现部位与厚度对毛管水上升高度的影响。因此,不能单纯按土壤质地来确定临界深度。文中也初步提出了排水沟间距的简单计算公式以供生产上参考试用。

~~

防止土壤盐碱化的发生与扩展,是目前黄河下游灌区保证农业增产的重要措施.我们研究了灌区土壤盐分与地下水动态的关系,分析了灌区土壤次生盐碱化发生的地下水条件,提出了保证作物丰产和防止次生盐碱化的地下水控制标准、控制制度和以灌溉、排涝为中心环节的综合防止措施.本文基于“毛细管破裂点”的概念,建议以强烈毛细管上升高度来确定地下水临界深度,其数值比过去减少大约一半,而且改变了重质土的地下水临界深度大于轻质士的传统看法.本文系这项工作的研究报告的一个缩写.

To control the ground-water table on irrigated lands is vitally important in arid and semi-arid regions. In order to determine the standard of water table control, considerable attentions were paid to the "critical depth" (or "safe depth") of ground-water table. The salts accumulate in the top soil if the water table is not deeper than this depth. The conditions that the salts accumulate in any layer of the soil owing to the movement of soil moisture are: (1) the supplement of soil moisture from neighboring...

To control the ground-water table on irrigated lands is vitally important in arid and semi-arid regions. In order to determine the standard of water table control, considerable attentions were paid to the "critical depth" (or "safe depth") of ground-water table. The salts accumulate in the top soil if the water table is not deeper than this depth. The conditions that the salts accumulate in any layer of the soil owing to the movement of soil moisture are: (1) the supplement of soil moisture from neighboring layer in the liquid phase (soil water); and (2) the soil moisture loss in vapor phase (soil vapor). This paper describes the soil moisture-content distribution profile, the classification of capillary water forms in the soil and the effect of moisture-content on the movement of soil moisture in liquid phase and vapor phase. There is a critical content of soil moisture W_R, which corresponds to the moisture-content of rupture of capillary bonds. When the moisture content is W_R, the rate of movement of moisture in soil, and the evaporation of the moisture from soil surface change (increase or decrease) with moisture content considerably. The value of W_R of light clay-loam equals to 16—18% (by weight) approximately. The critical depth may be expressed as H_c=H_R+Δ,where H_R is the distance from water table to the point of W_R on the soil moisturecontent distribution profile, and Δ is the depth of soil tillage (about 0.20m). Comparison of the data obtained from the field tests and the soil investigation sites of several irrigated areas in the northern part of the country with results determined by the above equation shows that the majority of them is consistent.

本文分析了地下水补給情况下土壤水分的形态和不同形态的水分在土壤中运行和蒸发的一些特点,论証了毛管水联系破裂含水率等土壤水分形态指标与土壤水分运动和土壤积盐状况的关系,探討了次生盐碱化发生的地下水临界条件,提出了地下水临界深度的确定方法,并且对現有的临界深度的确定方法进行了討论与比較。

 
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