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整体可靠性     
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  whole reliability
     Comprehensive usage of basic pile test method and its whole reliability evaluation
     基桩检测方法的综合运用及整体可靠性评价
短句来源
     It introduces normal method of basic pile test,puts forward its comprehensive usage and analyzes its whole reliability by artificial nerve net & Bayeux method,which has certain practical significance & applicative value of project.
     介绍了桩基检测的常规方法 ,对综合运用基桩的检测以及用人工神经网络和贝叶斯方法对基桩整体可靠性进行了分析 ,具有一定的实际意义和工程应用价值。
短句来源
     Based on test of 20-30% piles, appling reliability to making up synthesized appraise for existing piles, the whole reliability of pile test is increased.
     在检测20%~30%桩的基础上,应用可靠度对现场桩基础做出综合评价,提高了桩基检测的整体可靠性
短句来源
     The prediction study on the contact resistance of relays is very significant to that on the contact reliability of relays, even to the whole reliability.
     预测继电器触点接触电阻的研究对于预测其接触可靠性,乃至预测其整体可靠性均具有非常重要的意义。
短句来源
     Through the results of the reliability-based fuzzy optimum arecompared with the deterministic optimum design results and fuzzy optimumdesign results,we know that the deterministic optimum design and fuzzyoptimum design all can make the value of objective function much lowerthan tbrmer. But the two methods don抰 consider the structuralreliability,which results in the reliability distribute of structure aren抰reasonable and the whole reliability of structure reduce.
     将基于可靠度的结构模糊优化与确定性单目标截面优化及单目标模糊优化结果作比较,可以看出确定性截面优化和单目标模糊优化都能较大幅度降低结构的重量,但由于这两种方法都未对结构的可靠性提出要求,故导致结构可靠性分配不合理,结构整体可靠性降低。
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  entire reliability
     Random methods of gradual failure can truly reflect the generation, extention of partial failure, and effect to entire reliability.
     渐进性破坏随机法能很好反映边坡体内局部破坏的产生、扩展及对边坡整体可靠性的影响。
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  “整体可靠性”译为未确定词的双语例句
     The study is good for the research of failure mechanism, instructing manufacture, accelerating screening and improves the reliability of PTCR.
     对于失效形式和失效规律的研究,有利于进一步研究其失效机理,并指导生产和加速筛选,提高元件的整体可靠性
短句来源
     Entirety Reliability Analysis for Combination Arch Pipe Bridge
     组合拱式管桥整体可靠性分析
短句来源
     RELIABILITY ANALYSIS OF STRUCTURAL SYSTEM OF SPATIAL PRESTRESSED STEEL TRUSSES
     空间预应力钢桁架整体可靠性分析
     New Method of Analyzing Fatigue Integrated Reliability of Metal Structure
     金属结构疲劳整体可靠性分析方法
短句来源
     RELIABILITY ANALYSIS OF PLANAR PRESTRESSED STEEL TRUSSES BASED UPON REFLECTION TRANSFORMATION METHOD
     基于映射变换法的平面预应力钢桁架整体可靠性分析
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  structural system reliability
By introducing the load roughness index, the structural system reliability computation under hazard load can be greatly simplified, which is approximately determined by its weakest failure mode.
      
Optimal decision for the target value of performance-based structural system reliability
      
The optimal decision model of the target value of performance-based structural system reliability is established according to the cost-effectiveness criterion in the present paper.
      
The parameter programming and constraint relax models are proved to be equivalent with Kuhn-Tucker conditions when the performance-based structural system reliability constraints are all active.
      
Evaluation of Structural System Reliability Under Horizontal and Vertical Loads.
      


Electro-hydraulic control system has been incorporated in high power turbine-generators since early 70's,which is well known for its control accuracy and perfor-mance.In this paper,the principle and features of the first electro-hydraulic controlsystem developed in China are described.Causes of the oscillations arising from loadfluctuations and methods to eliminate them have been explored and analysed.Theredundant technigue is used to improved the system reliability.Results from long term of trial running are...

Electro-hydraulic control system has been incorporated in high power turbine-generators since early 70's,which is well known for its control accuracy and perfor-mance.In this paper,the principle and features of the first electro-hydraulic controlsystem developed in China are described.Causes of the oscillations arising from loadfluctuations and methods to eliminate them have been explored and analysed.Theredundant technigue is used to improved the system reliability.Results from long term of trial running are shown.

电液调节系统具有控制精度高,调节品质好等优点,七十年代初国外在大功率汽轮发电机组上普遍开始采用。本文介绍我国第一套汽轮发电机组电液调节系统的特点及原理,讨论了在负荷扰动下引起振荡的原因及其消除办法,还分析了电液调节系统的可靠性,介绍了由于在设计上采用余度技术等措施,使系统的整体可靠性达到较高的水平。文章最后介绍了该系统长期使用的情况及实际试验的结果。

The Fault Tree Analysis (FTA) is the most effective method of analy- zing the reliability of a whole system, and one of the most active branches in the present development of reliability technique. Up to now the study in multi-state variables fault tree has been insufficient both at home and abroad. There are only a few articles referring to this subject. This essay probes into the fundamental concept and character of mutlt-state var aoles, gives them a clear definition and fundamental formulae, thus making...

The Fault Tree Analysis (FTA) is the most effective method of analy- zing the reliability of a whole system, and one of the most active branches in the present development of reliability technique. Up to now the study in multi-state variables fault tree has been insufficient both at home and abroad. There are only a few articles referring to this subject. This essay probes into the fundamental concept and character of mutlt-state var aoles, gives them a clear definition and fundamental formulae, thus making multi state variables accord with the definition of the Boolean Algebra, and der- ive from this the calculating laws of multi-state variable Boolean function.

失效树分析法是分析一个系统的整体可靠性的最有效方法,也是目前可靠性技术发展中最活跃的分支之一.目前国内外对多态变量失效树的研究还很不够,只有少数文章谈及.本文对多态变量的基本概念、基本性质加以探讨,给出定义及基本关系式.使多态变量完全符合布尔代数的定义.并据此系统地推导出多态变量布尔函数的运算规则.

Experiments are performed to determine the common fracture toughness δ_(??r) and Liquid ammonia environmental fracture toughness δ_(SCC) on both the base metal and the welded joint of the shell material SPV38 of a liquid ammonia spherical tank in which a large number of cracks have emerged. According to the data and information of heat affected zones and the residual stresses and the metalurgical photographs sampled from the inner surface of thr tank, the paper preliminarily distinguishes that the nature of...

Experiments are performed to determine the common fracture toughness δ_(??r) and Liquid ammonia environmental fracture toughness δ_(SCC) on both the base metal and the welded joint of the shell material SPV38 of a liquid ammonia spherical tank in which a large number of cracks have emerged. According to the data and information of heat affected zones and the residual stresses and the metalurgical photographs sampled from the inner surface of thr tank, the paper preliminarily distinguishes that the nature of the cracks belongs to stress corrosion cracking. By applying FTA, the paper analyzes the effect of events initiating cracks in the tank, the relatively more important factors are found out. Some proposals for repair are made to avoid or reduce the possibility of crack initiation. The reliability evaluation of the tank is also carried out in the light of a Chinese Code of "Pressure Vessel Defect Assessment (CVDA-1984)".

本研究以一台曾出现大量裂纹的液氨球罐为例,测定了该球罐壳体材料SPV36及其焊接接头的常规断裂韧性δ_(cr)和在液氨介质作用下的断裂韧性δ_(scc);通过对球罐内壁焊接热影响区的硬度测定、残余应力测量及金相分析等,初步判定该球罐裂纹的性质属于应力腐蚀开裂.应用故障树分析方法(FTA方法)探查了该液氨球罐萌生裂纹的多因素效应,寻求了主要影响因素.文中提出了球罐检修时宜采用的某些避免或减少裂纹萌生的措施和建议.本文还以我国“压力容器缺陷评定规范(CVDA-1984)”为依据,对该球罐的整体可靠性进行了估评.

 
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