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- Using the property of Markov at the points of replacement period, a model of de termining the optimal period is developed with objective of maximizing the mean time to first failure of system. 利用在更换周期点上具有的马尔可夫性质,以系统首次故障前平均工作时间最大为目标建立了确定最佳更换周期的模型。
- The individual parameter for evaluating overhauled motor vehicles are: mean time to first failure(MTTF),mean time between failures(MTBF),equivalent failure rate(D),ect. 可靠性单项指标的确定 :平均首次故障里程 (MTTF) ,平均故障间隔里程 (MTBF) ,当量故障率 (D) ;
- Based on the comprehensive evaluation indicator system constructed (Mean Time To First Failure MTTFF; 根据所构建的综合评价指标体系(平均首次故障间隔时间MTTFF;
- 2.reliability indicator includes Mean Time To First Failure (MTTFF) and Mean Time Between Failure (MTBF); 以“在规定的时间间隔内出现的”故障次数来表示的一种故障阀值。
- mean time to first failure 平均首次失效前时间
- The average time from start of use to first failure in a large population of identical systems, components, or devices. Abbreviated MTBF. 大多数相同的系统、组件或者设备的,从开始使用到第一次发生故障以来的平均时间。缩写为MTBF。
- time to first failure 首次换效时间
- How do you change Greenwich mean time to Beijing time? 怎么计算格林尼治时间对应的北京时间?
- Also the temperature, current density, stress gradient and alloy elements have strongly effects on MTF (mean time to failure) of electromigration. 温度、电流密度、应力梯度、合金元素及工作电流模式等也对电迁移寿命有重要影响。
- My first failure only intensify my desire to succeed. 我的初次失败只更加强了我成功的信念。
- I need some time to orient my thinking. 我需要一些时间来使我的思想适应。
- Probability of Failure on Demand (PFD) and Mean Time To Failure Spurious (MTTFS) are two important parameters for quantitative safety assessment of Safety Instrumented System (SIS). 摘要需用故障率(PFD)及误跳车(MTTFS)是联锁系统定量安全评定中两个重要指标。
- A transistorize radio takes no time to warm up. 晶体管收音机不需要预热时间。
- In mirrored and RAID arrays, for example, the mean time to repair a disk failure includes the time required to reconstruct user data and check data from the failed disk on the replacement disk. 例如,在镜像盘和RAID阵列中,发生磁盘故障时的平均返修时间包括将故障磁盘上的用户数据和校验数据恢复到替换磁盘上所耗费的时间。
- And it can evaluate the current failure rate,the mean time to next failure(MTTF),the next possible failure time and the reliability of the tested software with certain time to run.All eval... 评估指标包括:软件当前失效率,平均故障前时间,下一故障可能时间,运行某一时间段后的可靠度等。
- It may take a long time to find a solution to the problem. 也许要花很长时间才能找到解决这个问题的办法。
- Novel flexible message structures to allow reduction in the Time to First Fix (TTFF) and exploitation of satellite path diversity. 采用全新的可变电文结构,能够减少“首次定位时间”(TTFF),并可利用卫星的路径分集。
- We proposed several factors to evaluate the reliability of OCS, which include reliability and unreliability, failure ratio, life expectation, repair frequency and mean time to repair (MTTR). 提出采用可靠度与不可靠度、失效率、平均寿命、维修度与平均修复时间等组成作为接触网可靠性的评价标准。
- It took him long time to smooth away perplexities. 他花了好长时间才消除了困惑。