桥梁耐久性差、服务寿命短及全寿命经济性指标差等问题已成为世界性难题。
Poor durability, short service life and low economical efficiency of Bridges have become a worldwide difficult problem.
从教授的反馈和论文考试的数量这两个指标来看，精英学校的表现略差。
On two measures—professors' feedback and the number of essay exams—selective schools do slightly worse.
由于这些指标永远都是递增的，所以必须事先确定一个基准，再根据它计算出之后的差量。
Because these metrics perpetually increment, you must take a baseline before and calculate the difference afterward.
随着起重机运行时产生的冲击和振动，可能引起轨道安装的松动、连接件脱落、变形、裂纹、精度指标超差。
With the impact and vibration of the crane, it may cause the rail installation loose, the connector fall off, deformation, crack, precision index super difference.
天然气输差是燃气公司一个重要的经济指标。
The transmission error of natural gas is an important economical index for gas transmission companies.
提供了一个在数学期望值不相等条件下进行概率分析的新方法，该方法采用所谓标准差系数作为分析指标。
Using the standard deviation coefficient as analysis target, the author provides a new probability analysis method, in case the mathematical expectations are different.
本文以每股分红送转、每股税后股利、每股红股、每股转增股本四个指标衡量公司股利分配的水平，以它们的标准差衡量公司股利分配的稳定性。
I use four indexes to measure the stability of dividend policies including the standard deviation of total dividend, cash dividend, stock dividend and the reserve transferred to common shares.
结论：无症状非吸烟者随年龄变化，其吸呼气相hrct肺密度定量指标，尤其是呼气相平均肺密度和肺密度差，发生了相应的变化。
Conclusion: Quantitative parameters of inspiratory and expiratory lung HRCT, especially mean lung density and the density difference changed subsequently with aging in asymptomatic nonsmokers.
在高阶像差四项指标中，以球差z(4,0)的改变最为显著。
Among the four aberration indexes, the difference in Zerike coefficient Z (4, 0) was the most significant.
在整个比对过程中，我们希望得到被测电池电压差的稳定性指标。方法是从几个冗余的读数计算出其标准偏差。
Throughout the entire intercomparison process, it's desirable to establish the stability of a measured cell difference by calculating a standard deviation across several redundant readings.
六标准差；DMADV； 制程能力指标；组装效率分析图；品质机能展开。
Six Sigma; DMADV; Process Capability Indices; Assembly Efficiency Analysis Diagram; Quality Function Deployment.
本文将讨论基本的LDO拓扑，解释关键的性能指标，并展示低压差稳压器在系统中的应用。
This application note reviews the basic LDO topology, explains key specifications, and shows the application of low dropout voltage regulators in systems.
基于动态平差模型，应用多指标动态规划工具建立了两种同时顾及精度，费用和可靠性准则的二类优化设计模型。
Starting with two models of the dynamic adjustment, two models of second order optimal design are proposed by taking into account the criteria of precision, cost and reliability.
基于标准差和变异系数两个指标，采用聚类分析，可将土壤剖面水分垂直变化划分为四个层次：速变层、活跃层、次活跃层和相对稳定层。
Based on the standard deviation and variation coefficient, soil water change in the profile could be divided into four layers by cluster analysis.
鼓形齿轮周向限制副是锥差式液压马达的重要部件，鼓形齿轮的加工质量直接关系到周向限制副的各项性能指标。
The crowned teeth gear circumferential restriction gear pair is an important part of the differential hydraulic motor with bevel gear transmission.
将所有的研究的数据合成，对于分类变量效应指标为风险比，对于连续型变量效应指标为加权均数差，根据研究样本的大小来加权。
Data were pooled across studies, and relative risks for categorical outcomes and weighted mean differences for continuous outcomes, weighted according to study sample size, were calculated.
试验结果表明，所用建筑石膏的初凝时间愈快，掺有S型缓凝剂后其初凝时间差愈大。所以，初凝时间差不宜作为石膏缓凝剂的缓凝效果指标。
The test results show that the quicker the initial set of plaster the greater the difference between the initial setting times of the plaster with addition of s type retarder.
这个角差称为金星视差，可以做为地球和金星距离的指标，因为两个数值互成反比。
This angular shift, called the parallax of Venus, would provide a measure of the distance between Earth and Venus because the two quantities are inversely proportional to each other.
将模糊数学中的综合评判方法应用于容差设计中，以解决多性能指标的容差设计。
The method of multi-object tolerance design is presented by the fuzzy synthetic judgment.
通过系统设计、参数设计和容差设计，以改善系统的功能指标。
Improve the objective function through system design, parameter design, and tolerance design.
应用粗糙集理论计算相同层次两两评价指标的近似质量差，根据差的大小确定指标重要性，并通过实例证明了该模型的合理性和正确性。
In the model, approximate quality difference of two evaluations in the same level is computed by rough sets, and the importance degree is determined by difference. The model is validated by instance.
获得数据指标的试验方法是根据GB8076- 1997规定试验方法，包括：泌水率、坍落度、凝结时间差、抗压强度比、收缩率等。
The testing method of acquiring the data guide lines is based on provision of GB8076-1997 including bleeding rate, slump, concreting time. ratio of compressive strength. shrinkage rate and so on.
获得数据指标的试验方法是根据GB8076- 1997规定试验方法，包括：泌水率、坍落度、凝结时间差、抗压强度比、收缩率等。
The testing method of acquiring the data guide lines is based on provision of GB8076-1997 including bleeding rate, slump, concreting time. ratio of compressive strength. shrinkage rate and so on.
应用推荐