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1)  average foaming life
平均发泡寿命
1.
With modified version of the computer program and experimental data, the forming and rupture coefficients, as well as the average foaming life and the foaming intensity have been determined.
利用改进的计算程序和实验数据,计算了由分解反应引起的发泡和消泡参数及平均发泡寿命和发泡强度等特性参数通过分析可以看出,发泡过程方程在给定的积分区间泡内是一个收敛很快的级数,可以采用取消级数项的简化形式。
2.
The average foaming life and foaming intensity have been defined and their application were discussed.
平均发泡寿命和发泡强度的定义和适用条件进行了分析 ,并辅以发泡和消泡系数来定量描述内生气源条件下熔体的发泡行为。
2)  foams life
发泡寿命
1.
Average foams life, has been presented as criterion to evaluate the foaming behavior in mol-ten slag.
提出平均发泡寿命作为熔渣发泡效果的实验评价指标。
3)  average life
平均寿命
1.
Through investigation,the authors figure that the average lifetime of the concrete dams in China is about 30-50 years.
阐述了坝工混凝土及其建筑物寿命的现状 ,指出国外坝工界认为混凝土坝的耐久寿命至少为 10 0 a,而我国混凝土坝的平均寿命为 3 0~ 5 0 a,2 1世纪我国将要付出高昂代价去加固修复病坝、危坝。
2.
In this paper a topologic analysis on the reliebility index system for power plant s protective devices is outlined, in it proposed a concept and algorithm on average life s corrent value to refrain from some weakness of the average life value.
对电站保护装置可靠性指标体系引用拓扑理论进行了概要分析,其中针对平均寿命值的弊端提出了平均寿命当时值的概念及算法。
4)  Mean life
平均寿命
1.
This paper applys Bayes method and historic testing datas and the informations provived by industral technique to make Bayesian demostration test sampling plans of mean life θ=1/λ,thus decreasing working times.
采用Bayes方法,利用历史试验数据及工程技术经验所提供的先验信息,制订了平均寿命θ=1/λ的Bayes验证试验抽样方案,以达到减少试验工作量的目的。
2.
Aiming at the problem how to determine whether the samples are IID, this paper analyzes the test of IID samples and discusses the statistic analysis of reliability under IID and non-IID conditions by taking the mean life for example.
如何判别样本是独立同分布 ?针对此问题 ,本文讨论了样本独立同分布的检验 ,并以平均寿命为例 ,对样本独立同分布和非独立同分布条件下可靠性统计分析进行了讨论。
3.
This paper gives an assessment method for the mean life of complex system based on component test information.
提出了一种利用复杂系统组成设备的试验信息,对复杂系统平均寿命进行综合评估的方法。
5)  mean time to failure
平均寿命
1.
In this paper,a new approach which combines the least-square method with Bayes theorem,takes advantage of the parameter estimation for single Weibull distribution was developed to estimate the mean time to failure and the reliability estimation of the mixed Weibull population.
通过联合运用最小二乘法、贝叶斯定理和对单一威布尔分布的参数估计法,对服从混合威布尔分布的电工产品平均寿命及可靠度进行了估计,并结合实际试验数据进行了计算。
2.
The estimation of the median lifetime and the mean time to failure and the confidence limits of the mean time to failure of electrical products were given.
联合利用中位秩及最小二乘法给出了估计威布尔分布参数的一种新方法,给出了电工产品中位寿命、平均寿命及平均寿命置信限的估计,并结合实际试验数据进行了计算。
3.
In the theory research and application work of the reliability, we wish to find the accuratecalculating formula about the mean time to failure of the products easily.
在可靠性理论研究与应用工作中,需要计算产品平均寿命。
6)  MTTF
平均寿命
1.
Monte Carlo Method of MTTF Evaluation for Large Complex System;
大型复杂系统平均寿命评定的Monte Carlo方法
2.
The MTTF s evaluation of large-scale complex system with MATLAB and monte carlo;
用MATLAB实现蒙特卡罗法评定大型复杂系统平均寿命
3.
We derive the reliability and MTTF of the system.
当开关寿命服从指数分布时,我们得出系统的可靠度和平均寿命。
补充资料:反应物分子平均寿命
分子式:
CAS号:

性质:设反应物A在某化学反应过程中逐渐消耗。各个A分子自反应开始的t=0时刻,到因化学反应而消耗掉所经历时间的平均值,称为该反应的反应物分子A的平均寿命τ。对于一级反应αA =P来说,τ与速率常数k的倒数呈简单关系:τ=1/(αk),a是反应方程式中A的计量(系)数。一级反应的τ等于反应物A的浓度降为初始浓度的1/e=0.368倍所需经历的时间。一级反应的τ值可直接反映指定条件下该化学变化在动力学上进行的难易程度,τ越短,反应越易于进行。

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