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large scale model
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  大尺度模型
     For the large scale model(a>1m,b>1m,a/λ>0.05), with the scale of geologic bodiesbecoming larger, the coherence values increased distinctly.
     大尺度模型(a>1m,b>1m,a/λ>0.05),相干值随着地质体尺度的增大而增大,且增大的趋势非常明显。
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     This paper introduces predominance and characteristics of test technique of full scale components hinge moment, large scale model rudder hinge moment,full scale torpedo rudder hinge moment in 8m×6m low speed wind tunnel in recent years, and gives some representative test results.
     介绍了8m×6m风洞近年来研究完善的全尺寸部件铰链力矩试验技术、大尺度模型舵面铰链力矩试验技术及全尺寸鱼雷舵面铰链力矩试验技术的优势和特点,给出了部分典型试验结果。
短句来源
     The formula is applied to the calculations both for small scale model and large scale model. It is found that the drawdown calculated by means of conventional numerical method is underestimated by 2/3 to 3/4 of the actual value,and the revised drawdown obtained from the proposed method is approximately equal to the analytical solution.
     采用该公式分别对小尺度模型和大尺度模型进行分析,计算结果表明,常规数值法得到的井中水位降深明显偏小,甚至只有实际井中水位降深的1/3~1/4,而经本文公式校正后得到的井中水位则与实际水位接近,相对误差较小,具有较高精度。
短句来源
  大比例尺模型
     The conclusions presented also apply to box type structures and the experimental techniques are applicable to large scale model tests of container ship, catamaran, engineering ship and ocean platform.
     所介绍的试验技术对于集装箱船、双体船、工程船和海洋平台等大比例尺模型试验具有一定的参考价值。
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     With the large scale model tests and the method of finite elements,this paper studies the mechanical behaviour of tunnel invert.
     本文通过大比例尺模型试验与有限元分析相结合的方法研究了隧道仰拱的力学行为。
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     In this paper, by the large scale model tests and FEM, authors study the mechanic behaviour of three lane road tunnel under tectonic stresses.
     通过大比例尺模型试验和有限元方法对三车道公路隧道在不同构造应力作用下的力学行为进行了深入研究。
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     By static load testing of a large scale model of the panel points,stress distribution on the points are measured, which are then analyzed with finite element method.
     通过对大比例尺模型进行静载试验,测量了节点应力分布,并用有限元法对节点进行了分析;
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     A large scale model test is performed about the loess sub-grade-pile group-gravity bridge pier by using pseudo-static test.
     采用拟静力试验对黄土地基-群桩基础-重力式桥墩进行了大比例尺模型试验研究.
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  “large scale model”译为未确定词的双语例句
     The significance, difficulty and key technologies of large scale model applied in estimation of non-point source pollution
     大尺度区域非点源污染负荷估算方法研究的意义、难点和关键技术——代“大尺度区域非点源污染研究”专栏序言
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     (3) Based on large scale model tests on SSI system and using general-purpose finite element program MARC, some issues about modeling of soil-structure interaction system are discussed in this thesis.
     (3)以桩基-土-上部结构动力相互作用试验为基础,结合通用有限元软件MARC,对结构-地基动力相互作用体系进行有限元计算建模的一些问题作了研究,主要包括土体动力本构模型的选用、土体与桩基交界面上的状态非线性模拟及网格划分等;
短句来源
     Large scale model tests and computation of junction of concrete watertight wall
     混凝土防渗墙接头大比尺模型试验与计算
短句来源
     This paper studied the dynamic response of the structure-box foundation-soil system through test and Finite Element(FE) analysis of 1/2 large scale model.
     通过对1/2大比例模型的试验与仿真分析,研究了结构-箱基础-土体系的动力反应.
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     An Algorithm for Large Scale Model of Production Planning
     一种求解大型生产计划模型的算法
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  large scale model
Large scale model joints exhibit tin pest but it appears that actual joints may be resistant due to the limited free solder surface available and the constraint of intermetallic compounds and components.
      
The stabilityproperties of the model are derived and the stacked-time algorithmperformances are checked for a large scale model with endogenous labour supplyand uncertain lifetime.
      
The problem we need to solve is a linear programming problem, so that a large scale model can be optimized without difficulty.
      
Studies of wall shear and mass transfer in a large scale model of neonatal high-frequency jet ventilation
      
The code is also used to simulate heat, water and salt flows in a large scale model (10's of km) of the Taupo Volcanic Zone, New Zealand.
      
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Abstract By using the F.E.M. the strength of cargo hold structures with cantilever beams of dry cargo ships can be calculated. The main difficulties encountered in such direct calculation are how to establish a reasonable and reliable calculating model and how to set boundary condition properly. Simplifications and assumptions in the mathematical representations must be made in such a way that they do not appreciably affect the accuracy of analysis. A test on a large scale model of a cargo hold section...

Abstract By using the F.E.M. the strength of cargo hold structures with cantilever beams of dry cargo ships can be calculated. The main difficulties encountered in such direct calculation are how to establish a reasonable and reliable calculating model and how to set boundary condition properly. Simplifications and assumptions in the mathematical representations must be made in such a way that they do not appreciably affect the accuracy of analysis. A test on a large scale model of a cargo hold section for a 5000 dwt cargo ship was carried out and calculations made accordingly. The aims of the study were: a) To realize the behaviour of the cantilevers, web frames and stringers. b) To realize the effect of the number of cantilevers on the structure. c) To find out a correct method of setting the calculation model. The 6.75m×3.2m×1.8m model was made of steel. Concentrated loads were simultaneously or individually applied by hydraulic jacks on both ship sides and upper and lower decks for five loading conditions. The stresses on various structural components were measured and compared with that gained in the calculations using mechanical models of both three dimensional frame system and beam-plate system. The latter model was found to be the better. The results of calculation generally have a good agreement with test results. The calculation using the space frame system can give satisfactory results only when general stress distribution is required. This paper discusses also the effects of the number and the type of the cantilever structures, and properties of the inner forces.

在目前建造的干货船中,很多采用悬臂梁结构,为进一步了解这类结构的受力特征,为设计和计算提供依据,对一艘5000吨近洋干货船的第二货舱进行了舱段模型试验和有限元计算.研究的目的是:1)了解舱段内悬臂梁、肋骨、纵桁的受力特征.2)了解在舱口间设置不同根数的悬臂梁的影响.3)用有限元计算舱段模型时,探求计算模型的正确建立方法.模型尺度为6.75米×3.2米×1.8米,采用钢结构,用油泵液压系统同步多点加载.用立体骨架分析和杆板组合结构的两种计算模型进行了该舱段模型的应力计算,并将计算值和试验结果进行了比较.本文也讨论了悬臂粱结构内力分布的一些特性.

This paper introduced the large wind tunnel in our inslitite. According to the similarity theory of two phase flow,we expounded the applying range in geography and the limit in open field of the experiments of a wind tunnel, Ranolds number must be increased under the situation without sand-bearing wind. Only when Ranolds number is above 106, a model with angular turns (such as the ceiling of a vehicle and tree branches of a shelterbelt) may not be. affected by the model size and the change of wind velocity,...

This paper introduced the large wind tunnel in our inslitite. According to the similarity theory of two phase flow,we expounded the applying range in geography and the limit in open field of the experiments of a wind tunnel, Ranolds number must be increased under the situation without sand-bearing wind. Only when Ranolds number is above 106, a model with angular turns (such as the ceiling of a vehicle and tree branches of a shelterbelt) may not be. affected by the model size and the change of wind velocity, and thus the experimental result can be applied to open field. If there is windborne sand, due to the limited scale of sand particles (sand particles of model being no smaller than 0.08 mm) , the distribution of erosion and deposition areas can be estimated by the stream field distribution of experiments, we made experiments of large scale model to reduce error caused by uncompleted similarity.This paper also dealt with the main experimental results after our wind tunnel had been built, we also studied the lifting off mechanism of sand particles by using 2000 pps high Speed photography. It indicates that impact is very important for thd up lifting of sand. For communications and telecommunications, the phenomenon of sand-driving wind and barriers for derivating wind downward in order to prevent windborne sand and snow drift have been studied. We have also proposed several protecting measures, which have gained good results.

风沙运动和防治风沙、风雪流工程等的模拟实验研究表明,风洞实验技术应用于沙漠学研究中,进行半定量、定量的测量,可以提高研究水平,更好地解决生产实践任务。

A comprehensive study on a large-scale model of prestressed dual-cable system is introduced in presented paper. Statical stresses and deflections of the system in different load cases are measured. Dynamic properties. frequencies、mode shapes and damping characters for several lowest modes of vibration are investigated. Comparison of theoretical results with measurements gives satisfactory agreement.

本文介绍预应力双层索系的大模型试验,在静力方面,考察了体系在各种不同形式荷载作用下的内力和变位:在动力方面测定了体系的各阶频率以及相应的阻尼。试验结果为预应力双层索系这种结构形式的工作性能提供了较为完整的概念,并很好地验证了理论。

 
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