工作疲劳的

This study consists of three parts. Firstly the equivalently accelerative corrosive environment is determined through the analysis of statistic data of corrosion environment. Secondly the fatigue test is carried out under the constant amplitude cyclic loading for the specimens which are exposed in the corrosive environment for equivalent calendar time of zero year, 3 years, 8 years and 13 years. Four S-N curves with different corrosive time are obtained based on the fatigue experiment. Finally the regression method of S-N curves for experimental data is researched and a weighted least square fit is put forward in which the weigh of a group of test data is inversely proportional to the length of the confidence interval.

进行了以下几个方面的工作：(1)通过实测、统计、分析得到了当量加速环境谱；(2)完成了在当量加速环境谱下预腐蚀日历年限0年、3年、8年和13年的腐蚀试验，并进行了成组常幅疲劳试验，得到了不同预腐蚀年限下的S-N曲线；(3)进行预腐蚀后的S-N曲线的数据拟合方法的研究，提出了考虑置信区间长度影响的加权最小二乘法。

The change of plant diversity during natural recovery process of vegetation in Ziwuling area;2. Resource of Medicinal Plants of Caprifoliaceae and Its Utilization in Ziwuling Forest District of Gansu Province;3. Effects of Land Use on Soil Properties in Ziwuling Region

随着子午胎技术的不断进步，钢帘线厂家为满足轮胎使用厂商的要求，研制和生产了许多新型结构的钢帘线，且不断改善钢帘线质量，特别是在提高强度及改善抗锈蚀和耐疲劳性等方面有许多工作要做。

The failure behavior of SS316L has been investigated under environment and stress coaction by corrosion fatigue device.

本工作运用自制的腐蚀疲劳试验机，研究了在环境与应力协同作用下，316L不锈钢的失效行为和过程，证实了不锈钢的失效过程中存在着多种腐蚀类型的交。。。

A new ERD automatic bending fatigue tester for crankshaft was developed. Its principle,design,control process and main specification are described.

介绍了ERD曲轴疲劳试验机的系统结构、工作原理、电控部分的组成、系统的特点和主要性能指标。

The code adopts to ratio of stress as fatigue control factor is quite different from new theory, And it cant reveal real condition of structures. The result of fatigue calculating seems to unsafely.

该规范采用的以应力比控制结构构造疲劳设计的理论已同最新研究理论相差很大，不能反映结构的真实工作状况，且计算结果有偏于不安全的倾向。

Aiming at the problems that oil pressure of existing P7100 type fuel injection pump can not meet the demand of the injection pipe fatigue test, on the basis of analysis and calculation, we designed a set of hydraulic integrated supercharging device.

针对现有 P7100型喷油泵出油压力不能满足喷油管疲劳性试验要求的问题，在分析、计算的基础上，设计出一套全液压集成式双作用增压装置；对其工作原理、结构特点进行了简要介绍，提出了系统集成化的设计思想，实现了各缸、阀、油路等元件的集成化。

When you imagine throttling your colleague or secretary (perhaps because they're spreading gossip at work), your physical response can lead to hypertension, depression, insomnia, fatigue, and gastrointestinal disorders.

当你想象扼杀你的同事或是秘书（可能因为他们在工作中散布谣言），你的身体的反应会导致高血压、沮丧、失眠、疲劳和肠胃功能紊乱。

The spring element is one key part of DMF.

弹性元件是DMF的关键部件之一，本文的主要工作是分析在交变载荷下弹簧的应力和疲劳寿命。

Thus, burnout research had its roots in care-giving and service occupations, in which the core of the job was the relationship between provider and recipient.

这些行业中人与人之间的关系意味着从一开始起，疲劳研究在独立个体的受压反映上的侧重就不足，而是侧重了研究了独立个体在工作环境中的相互交叉影响。

In the meanwhile, abundant information and long-playing work at computer, people's eyes get more tired.

同时大量缤纷的信息、长时间的屏幕工作，人们的双眼越来越疲劳。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。