可靠性

Meanwhile , frame structures are used as study object , the straightened algorithm which has better calculation precision with fewer calculation time is chosen as amende .

本文以框架结构为研究对象，在修正方法上选择了计算量小且修正精度较高的拉直算法，为验证提出的可靠性指标的可行性，对四组设计参数分别进行了修正模型和地震作用下的广义预测控制可靠性分析，从结果对比可知，本文所定义的可靠性指标具有一定的可行性，并且本文方法计算量较小。

Software reliability is one of the most important quality characteristics. The definition of software assessment is discussed, the mechanism of software failures is described, 2 software reliability assessment methods based on triangular fuzzy number arithmetic operations and trapezoid fuzzy number arithmetic operations respectively are proposed, and some examples to use these methods are given.

软件可靠性是航天型号软件的重要质量特性之一，本文阐述了软件可靠性评估的定义，讨论了软件的失效机理，提出了基于三角形模糊数算术运算和基于梯形模糊数算术运算的软件可靠性评估方法，并给出了使用这些方法的示例。

Secondly, the reliability assessment of system is studied with the Bayesian approach, which includes simple system, typical complicated system and system with binomial components connected in series, whose reliability is especially high.

其次，研究了系统Bayes可靠性评估方法，包括简单系统、典型复杂系统以及特高可靠性成败型串联系统Bayes可靠性评估方法。

Reliability models are reliability block diagram and mathematics models that built to predict and evaluate reliability of products.

可靠性模型是指为预计或估算产品的可靠性所建立的可靠性框图和数学模型。

To solve calculable problem of the reliability of fibre channel interconnection, based on basic FC interconnection model, a task based analysis method of system reliability was proposed, a reliability model of FC interconnection system was developed and the matrix of system reliability was used to describe reliability model.

对于光纤通道互连的可靠性计算问题，从FC的基本模型出发，提出了基于任务的系统可靠性分析方法，建立了FC互连系统的可靠性模型，并给出了系统可靠度矩阵的表达形式。

Based on the fuzzy mathematics and the theory of the reliability design, the mathematics model of the fuzzy reliability design of the circular arc gear s is established.

根据模糊数学和可靠性设计理论，建立圆弧齿轮传动的模糊可靠性设计的数学模型，探讨其计算方法，并结合电厂球磨机的传动系统进行具体的模糊可靠性设计。

Based on the flaw of the probability reliability model in the case of small amount of information,non-probability and mixed probability/non-probability reliability models are presented. When the uncertainty of the basic random variable is described by convex, analytical and numerical methods are constructed to calculate the convex of response variable. The infinite norm index, which is the minimal infinite norm distance from original coordinate point to the surface of the limit state in the standard interval space, is presented to measure the safety of the structure.

针对概率可靠性模型在小子样信息下的缺陷，建立了非概率可靠性模型及概率—非概率混合可靠性模型；给出了用集合来描述变量不确定性时，极限状态变量变化集合的解析解和数值迭代解法；提出了物理概念明确且十分易于工程应用的度量结构、机构安全程度的无穷范数指标，它是标准区间空间中坐标原点到极限状态表面的最小无穷范数距离。

It is suggested that reliability evaluation is one of the effective way to enhance the crane reliability.

第一章叙述了可靠性技术的发展历史，可靠性研究存在的问题和可靠性技术的展望。

According to concrete conditions of the wing flap retraction-extension system of the 18 trainer aircraft, this paper ca nes out a research into the relibility demonstration test and the life test plans of the system, and deals with some key issues related to the test in a deep manner, such as relation between the reliability test parameters and the reliability indexes, converting from working time, composite test profiles, the mathod determining reliability test parameters for success ratio and so on.

本文针本对L8机襟翼收放系统的具体情况，研究了其可靠性验证试验和寿命试验方案，并深入研究了涉及试验的关键问题，例如：可靠性试验参数与可靠性指标之间的关系，工作时间与工作次数的折算，合成试验剖面，确定成败型可靠性试验参数的方法等等。

The baber gives a brief introduction to the basic concept of reliability design,brings out,by the example of the design of the shaft which is deformed by the combining of bending and torsion,the...

本文介绍了可靠性设计的基本概念，并以受弯扭组合变形的转轴设计为例，导出转轴可靠性设计的方法和公式，把用可靠性设计方法计算出的结果和用传统设计方法计算出的结果进行比较，说明可靠性设计方法的优越性。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。