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energy-dissipating
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  消能
     Design method of energy-dissipating earthquake-reduction along longitudinal direction of self-anchored suspension bridge
     自锚式悬索桥结构纵向消能减震设计方法研究
短句来源
     Design of flood-discharging and energy-dissipating structures of Jiangkou hydropower station
     江口水电站泄洪消能设计
短句来源
     Talking about the Energy-dissipating and Shock-absorbing Structure
     浅谈消能减震结构
短句来源
     This paper elaborates the applicability of the energy-dissipating and shock-absorbing design,introduces the basic principle of the energy-dissipating and shock-absorbing system of the engineering structure and the basic method of the energy-dissipating and shock-absorbing design,and probes into the mode selection,quantity determination and arrangement of the shock-absorber and its energy-dissipating and shock-absorbing results.
     阐述了消能减震设计的适用范围,介绍了工程结构消能减震体系的基本原理和消能减震设计的基本方法,探讨了消能器的选择、数量确定、布置及其消能减震效果。
短句来源
  能量消耗
     The results, which is from the test of the flow characteristics of the fluid in the three-phase circulating fluidized bed , show that the flow efficiency of the fluid in this circulating fluidized bed with polymer porous carriers is excellent, and its minimum fluidization velocity and transport velocity are more small compared with some other carriers, so the energy-dissipating in the operation of the reactor is very low.
     三相循环流化床的流动特性试验结果表明,以高分子载体作为固相的三相循环流化床的流化效果好,其最小流化速度与颗粒起始输送速度较其它载体低得多,流化床的操作能量消耗较低;
短句来源
  “energy-dissipating”译为未确定词的双语例句
     Analyzing energy-dissipating character of hydraulic power steering system
     液压转向助力系统能耗特性的分析
短句来源
     Three other hysteretic models,including elastic perfectly-plastic(EPP),shear-slipped(SSP) and bilinear elastic(BIL),are analyzed to examine the effect of energy-dissipating capacity and stiffness degradation on the R spectra,and the results,together with the R spectra for MC model,are compared.
     为了分析耗能能力、刚度退化的影响,将延性和耗能能力作为两个独立变化的因素,分析了理想弹塑性(EPP)、剪切滑移(SSP)和无任何耗能能力的双线性弹性(BIL)模型下的R谱,与MC滞回模型下的R谱一起相互之间进行了对比。
短句来源
     Here we probe into a new mode to expend earthquake energy by creating trace imitated earthquake waves in order to achieve the goal-area energy-dissipating.
     本文探讨了一种以制造微量模拟地震波来消耗地震能量,达到区域防灾目的的新途径。
短句来源
     Study on culvert energy-dissipating cover plate in dispersive delivery system is performed.
     就分散输水系统中廊道支孔设置盖板这一共性问题 ,作了较为系统的研究。
短句来源
     The test results show that: the above two steel bracing-retrofitting methods can improve the lateral stiffness and energy-dissipating capacity of the existing frame structure effectively;
     试验表明,两种支撑加固方法都能显著提高结构的抗侧刚度,有效改善结构的耗能能力;
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  energy-dissipating
It turned out that the contribution of both energy-dissipating systems in the prevention of mitochondrial reactive oxygen species generation in vivo could lead to its constant level throughout the growth cycle of A.
      
In a previous work, it has been shown that protein expression and activity of these two energy-dissipating systems exhibit large variations during tomato fruit development and ripening on the vine.
      
The Energy-Conserving and Energy-Dissipating Processes in Mitochondria Isolated from Wild Type and Nonripening Tomato Fruits Dur
      
The energy-dissipating crack propagation processes were described.
      
This improvement is related to the build up of an energy-dissipating mechanism by fibre microcracking in the vicinity of the crack tip.
      
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The dynamic properties of the unstable (fast) propagation of cracks, especially the rule of the variation of propagating velocity, are discussed. The case to be considered is that the extension of cracks is not very long (as the cases of rapid crack propagation under impulsive load) , the main idea of this paper is that the rapid propagation of cracks may be treated as a vibration problem and is connected to the basic conceptions of fracture mechanics (such as criterior of fracture, etc.) by the principle of...

The dynamic properties of the unstable (fast) propagation of cracks, especially the rule of the variation of propagating velocity, are discussed. The case to be considered is that the extension of cracks is not very long (as the cases of rapid crack propagation under impulsive load) , the main idea of this paper is that the rapid propagation of cracks may be treated as a vibration problem and is connected to the basic conceptions of fracture mechanics (such as criterior of fracture, etc.) by the principle of energy equivalence. The rapid propagation of cracks is essentially a specific type of the transient vibration of elastic bodies, with the boundary conditions varying with the time. Under the assumption of equivalence, the above problem may be treated as the initial-value problem of a damped system with multiple degrees of freedom, considering the nonlinear effect of stiffness due to the extension of crack. After further simplification, it is deduced to a transient response problem of a damped nonlinear system of single degree of freedom under the initial condition of displacement, so that the solution can be obtained numerically. The fundamental conceptions for which the model is constituted, is the principle of the whole amount of energies being equivalent between the model and practical element, and the primary (main) hypothesis is that the fracture energy dissipated during the propagation oi crack is equivalent to the damping energy of the model system. The DCB specimens are taken as an example for explaining the theory and computing procedure. Numerical examples are calculated and compared with experimental results.In order to record the complete procedure of the rapid propagation and arrest of the crack by experiments, a new method of eddy-current type is developed.Computational results of several specimens of different materials are all coincided well with the experiments. So it can be concluded that the computational model can be used at least for such cases. Further research would be studied for more compli cate cases.

本文研究裂纹快速扩展的动力特性,特别是裂纹扩展速度的规律.主要考虑在裂纹扩展量不很大的情况(如冲击载荷下裂纹快速扩展的情况)下,将裂纹快速扩展-止裂过程作为一种瞬态振动问题求解,而通过能量相当(等效)的原则与断裂力学基本概念(断裂准则等)相联系.计算模型的主要假设是:在裂纹快速扩展过程中,断裂能的消耗用等效的阻尼能来表达.经过近似处理,最后归结为求解有阻尼的单自由度非线性系统在初位移下的瞬态响应计算问题.以DCB试件为例说明计算程序,并给出实例计算结果与实验结果和其他工作的比较.用涡流检测法记录裂纹快速扩展的全过程,以提供实验数据。计算结果与各种实验结果符合较好,初步证明所用的计算模型的有效性,可以作进一步的推广研究以及用于更复杂的问题.

This method, suitable for digital computation, is used for calculating all the natural frequencies, mode shapes and their resonant-vibration stress for a banded group of turbine twisted buckets vibrated in tangential, axial and torsional directions.In this approach, the buckets are connected elastically with a continuous beam and, as the following factors are considered, the calculation is done more accurately.a. Twist of blade.b. Modification due to the effect of shear deformation and rotary inertia in buckets...

This method, suitable for digital computation, is used for calculating all the natural frequencies, mode shapes and their resonant-vibration stress for a banded group of turbine twisted buckets vibrated in tangential, axial and torsional directions.In this approach, the buckets are connected elastically with a continuous beam and, as the following factors are considered, the calculation is done more accurately.a. Twist of blade.b. Modification due to the effect of shear deformation and rotary inertia in buckets and band.c. The effect of centrifugal force in revolution of a banded group.d. Part of the root of bucket participated in vibration.It does not only calculate tangential bending vibration in Ao, Po and Al modes, but also axial bending-torsional vibration in X, U and S.,nodes and different torsional modes.Through the comparison of more than ten stages with short and medium-height steam turbine buckets in large power units, we found the values of calculation basically agree with the measurement in the power plant.Having calculated the frequencies and modes of a banded group, we use the principle of energy conservation--during the steady resonant state of a banded group, within a vibration cycle, the energy supplied to the blades of the banded group by the existing force acting on tangential, axial and torsional directions is equal to the energy dissipated in damping on the above directions for all buckets in group--to calculate the real displacement and resonant-vibration stress of blade, root of buckets, band and rivets in group for different known vibration modes. At the same time, according to the fatigue strength of the material, steady stress, structure, technology and the operating condition, we get the permissible fatigue stress of material for judging the safety of the vibration stress. The author found that the result of the calculation of "169" accident of stages and the safe operating stages, an improved design of the original "169", agreed with the real circumstances.This method is mainly used to calculate short and wedium-height blade group. The author analyses the accident of the first-stage in French KT1501 steam turbine unit used in the whole set equipments with a capacity of 300,000 tons/year synthesized ammonia. The coefficient in calculation--the fractional stimulus S and logarithmic decrement δ derive from the French data. The calculating frequencies basically agree with the measmement and, according to the vibration stress value, we get the conclusion of the calculation for the accident stage as follows.1. The abruption accidents of the first stage in the original rotor (the 1st, 2nd and 3rd accidents) were due to axial-toisional resonance-U mode for four bucket's group and x mode for three bucket's. Although the blades and band were safe, the resonant-vibration stress of bucket root were unsafe and that of the rivet was large. Also, when extra fluctuating bending moment was applied from forced band vibration by steam inlet in partial circumference, the rivet was in danger. After two rivets had been used on the blade, the rivets were safe, but fatigue still occured in bucket root (as in the 5th accident)2. The abruption accident of the first-stage in the new rotor (the design was improved by the French but the abruption still took place as in the 4th accident) was due to a tangential resonance with Bo mode; its resonant stress of the bucket root was more than the permissive vibration stress of the material, thus causing it to fatigue abruption.The results of the calculation agree with the abrupting position and the surface of the crack in these accidents. Therefore, the author is of the opinion that all the five abru ption accidents that happened in the past were mainly due to the design of the banded group, not to the operation or defect of the material used.

本文叙述由汽轮机围带扭叶片组各类计算振型、按能量守恒原理进一步算得在发生各类振型的共振时叶片组叶身、叶根、围带及铆钉的振动应力。并根据材料的许用耐振强度判断其共振的安全性。本法主要用来计算电厂汽轮机中等长度的叶片。这里也计算了曾发生五次振动断裂的法国进口机组第一级动叶,计算结果表明该级原先叶片主要是由于2nZ喷咀激振力引起的叶片组轴向弯曲U型共振断裂。经法国修改设计后,仍旧断裂,但断于nZ喷咀激振力引起的叶片组切向弯曲B_o型共振。计算结论与实际事故部位及断口分析符合。

A microsecond flash photolysis apparatus which has been set up recently in the Institute of Biophysics of Academia Sinica is described. The time resolution of the apparatus is about 5 microseconds and the energy dissipated in a single flash is in the range of 400~600 joules. The minimum detectable optical density of transient species may be 7 × 10~(-4)O. D.Observations on formation and decay for the hydrated electron and dihalide anion radicals were made on this apparatus. The hydrated electron e_(aq)~- has...

A microsecond flash photolysis apparatus which has been set up recently in the Institute of Biophysics of Academia Sinica is described. The time resolution of the apparatus is about 5 microseconds and the energy dissipated in a single flash is in the range of 400~600 joules. The minimum detectable optical density of transient species may be 7 × 10~(-4)O. D.Observations on formation and decay for the hydrated electron and dihalide anion radicals were made on this apparatus. The hydrated electron e_(aq)~- has maximum absorption at 680 nm and the absorption peaks of .Cl_2~-, .Br_2~- and .I_2~- are at 340, 335 and 380 nm respectively. The kinetics of decay for these transient species is also discussed.

本文介绍了最近在中国科学院生物物理所建成并投入使用的微秒级动力学光谱型闪光光解装置。该装置的时间分辨率约5微秒,一次闪光消耗的能量为400~600焦耳,瞬态光吸收产物的探测灵敏度达到7×10~(-4)O.D.。在该装置上对水合电子和双卤素阴离子自由基的形成和衰变作了观察,水合电子的最大吸收在680nm处,·Cl_2~-、·Br_2~-和I_2~-的瞬态吸收最大值分别在340nm、355nm和380nm波长处。本文还对这些瞬态产物的衰变动力学作了初步探讨。

 
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