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- 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) ;
- 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。
- 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
- 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?
- The accident was caused by human error. 这宗事故是人为过失造成的。
- Most of the problems were due to human error. 多数问题都是人为错误造成的。
- I need some time to orient my thinking. 我需要一些时间来使我的思想适应。
- The loss was due to human error. 这次任务的失败是认为的错误导致。
- The mean time to repair (MTTR) is one of the main indexes for system's reliability analysis and risk analysis. 串联系统的特点是串联元件中任一部分（元件）失效都可导致系统失效。
- The accident was the result of human error. 这事故是人为的错误造成的。
- A transistorize radio takes no time to warm up. 晶体管收音机不需要预热时间。
- 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。
- 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。
- Reliability of each individual node is enhanced by reducing its MTTR (Mean Time To Repair).Therefore, the availability of the whole system is improved. 通过测试和分析，这种快速的自动恢复机制通过缩短单结点的平均修复时间MTTR而提高了单结点的可用性，从而也提高了整个系统的可用性。
- 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。
- Will 2003 be the year of the first human clone? 人类第一个克隆人会在2003年诞生吗?
- It took him long time to smooth away perplexities. 他花了好长时间才消除了困惑。
- It is time to pony up on that bill. 是照帐付钱的时候了。
