reliability 和 durability 有什么区别

Please help to distinguish validity and reliability.Thank you.

英语翻译
Use of technology to improve the reliability of DC power supply rectifier
这个翻译对不对,百度翻译的.
电路中是并联的意思，如果整套设备屏之间并联，多用并列，不毛盾！
“利用整流器并列运行技术提高直流电源可靠性”
“Use of rectifier parallel operation technology to improve the reliability of DC power supply”百度翻译的

英语翻译
In fact,in practical engineering reliability analysis of mechanical and other systems is probably less interesting than an optimization of those systems with or without reliability constraints
还有,is probably less interesting than
一楼回答得太笼统了（思路基本对），

英语翻译
翻译下这个句子Monitoring-Based Fatigue Reliability Assessment of Steel Bridges:Analytical Model and Application

英语翻译
The second aspect of
response is the reliability of scheduling.One way the German machine industry
has maintained its competitiveness despite having the word’s highest labor costs
is through reliable response.This response manifests itself in reliable scheduling.
German machine firms have meaningful schedules ----and they perform to these schedule.
Moreover,the result of these schedules are communicated to the customer and
the customer can,in turn,rely on them.Consequently,the competitive
advantage generated through reliable response has value to the end customer.

ATTENTION!
The reliability of this hard drive is within acceptable limits so far,but its performance and/or reliability have fallen to an average level and it does not allow you to use your hard drive to the maximum extent and leads to a further gradual decline in its condition.It is recommended to schedule replacing the hard drive.

For best reliability & performance,please change the stand alone如题

Chances are you're attracted to the value and reliability associated with the brand value it gives.
这个句子是主系表结构吗?还是Chances are是个固定用法?
请帮忙翻译整句,并分析一下结构.

Relevance,Reliability,Comparability,Understandability这几个词的详细解释和区别~
关于会计学方面qualitative characteristics的问题.求懂英语的会计学方面的人解答

英语翻译
structural reliability theory is concerned with the rational treatment of uncertainties in structural engineering and with the methods for assessing the safety and serviceability of civil engieering and other structures.it is a subject which has grown rapidly during the last decade and has evolved from being a topic for academic research to a set of well-developed or developing methodologies with a wide range of practical applications.
uncertainties exist in most areas of civil and structural engineering and rational design decisions cannot be made without modelling them and taking them into account.many structural engineers are shielded from having to think about such problems,at least when designing simple structures,because of the prescriptive and essentially deterministic of most codes of practice.this is an undesirable situation.most loads and other structural design parameters are rarely known with certainty and should be regarded as randow variables or stochastic processes,even if in design calculations they are eventually treated as deterministic.some problems such as the analysis of load combinations cannot even be formulated without recourse to probabilistic reasoning
until fairly recently there has been a tendency for structural engineering to be dominated by deterministic thinking,characterised in design calculations by the use of specified minimum material propertise,specified load intensities and by prescribed procedures for computing stresses and deflections.this deterministic approach has almost certainly been reinforced by the very large extent to which structural engieering design is codified and the lack of feedback about the actual performance of structures.for example,actual stresses are rarely known,deflections are rarely observed or monitored,and since most structures do not collapse the real reserves of strengths are generally not known.in contrast,in the field of hydraulic systems,much more is known about the actual perfomance of,say,pipe networks,weirs,spillways etc,as their performance in service can be relatively easily observed or determined.

英语翻译
The latter is a high-reliability,counterflow,plate-fin heat exchanger that recovers the energy from the exhaust by heating air and directing it to nine combustor cans arranged radically around the circumference of the engine.the recuperator' s heat exchanger cores are made of 14-4 stainless steel developee by allied signal.preheating the combustion air by recovering waste energy from the exhaust improves cycle efficiency.

英语翻译
The safety and reliability of concrete bridges and bridges with concrete components depend on the ductility of reinforced and prestressed concrete,on the internal and external redundancy typical of concrete construction,and on concrete's demonstrated capacity to carry full design load while at the same time exhibiting severe cracking and the corrosion of embedded steel.

英语翻译
In this context,methods of reliability led to more significant
techniques that have been advanced based on a more
rational evaluation of incurred risks.Such methods enable
quantitative evaluation of the default risk of a given tube by
considering uncertainties brought into play (loading,properties
materials,temperature,etc.),and to optimize tube design
for the considered risk [1].Considering dubious mechanical
analyses is an essential condition for an optimal and robust
dimensioning of structures.This objective led to the development
of probabilistic approaches for the mechanics of structures
for several decades.These methods make it possible to
study reliability of components or systems and the influence
of the variability of variables of design on the behavior of such
components or systems.Methods of coupling mechanicreliability
engineering must then integrate increasingly complex
mechanical modeling (behavior non-linear,dynamic,
tiredness,breaking process,etc.) to make studies on reliability
effective and exploitable.This necessary complexity causes
analyses to become increasingly demanding in terms of computing
time.Tubes made with high-strength low-alloy steels
are used to construct gas and oil pipelines for transporting
pressurized hydrocarbons over long distances.Pipelines are
subjected to high amounts of stress because of internal fluid
pressure,overlaying soil,surface traffic,and environmental
attacks that can lead to damage,especially under failed passive
protective coating.The main causes of such damage are
stress corrosion cracking,wall thickness reduction,and the
presence of stress concentrators [2].Moreover,during the
manufacturing process of the pipe,thermal and mechanical
deformations often produce residual stresses.Generated residual
stresses are often very high,sometimes approaching material
yield strength; however,their effects are not evident until
the structure is fully loaded or exposed to a service environment
[1,3,4].Tensile surface residual stresses are detrimental
because they increase susceptibility of the component to fatigue
damage,stress corrosion,and even fracture.
The objective of this work consists of coupling with the
mechanical model,an approximate model of probability obtained
by statistical training.The effectiveness of this model is
then measured by the number of mechanical calculations necessary
to build a robust substitute for the concerned analysis,
which is reliability or sensitivity.

英文翻中文(追加50分!)
Reliability
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Broad Platform Support
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Training,Consulting & Support Offerings
MySQL provides support and training from development to deployment through a variety of training,consulting and support offerings tailored to the needs of ISVs and OEMs.Whether you need help architecting your system,migrating from an existing solution,tuning performance or answering tough implementation questions,MySQL is there to help make you successful every step of the way.
不要用金山快译类的软件翻译!要准确的.