查询词典 fatigue

Based on the fatigue test results of SAE 1045 medium carbon steel,the multi-axial fatigue life predication models for different ratios of torsional nominal stress amplitude to the axial one are studied respectively.

基于SAE 1045中碳钢的单-多轴疲劳试验结果，在研究了扭转名义应力幅与拉伸名义应力幅不同比值时的多轴疲劳寿命预测模型之后，建立了统一的多轴疲劳寿命预测模型。

objective to study the correlation among psychosomatic health factors,depression,anxiety and sleep status in college students,to analyze influence factors in sleep status.methods with questionnaire opened in-vestigation,200college students were evaluated using cornell medical index,self-rating depression,self-rating anxiety scaleand pittsburgh sleep quality index.stepwise regression analysis was used.re-sults total score of sds was35.55±7.8,and sas was0.48±0.9.each score of cmi was higher than normal range,the highest was digestion system,next was respiration system,then,fatigue,eyes and ears,anxiety,sensitivity,tension,maladjustment in turn.total average score of psqi was6.32±3.6,ordinary sleep were115cases（57.5%）,good and bad sleep were42（21%）and43（21.5%）cases respectively.influence factors in total score of psqi were sas,cmi,respiration system,anxiety,past healthy,digestion system,fatigue,sensitivity,sds and malad-justment in turn,using stepwise regression analysis,total score of psqi as dependent variable,each factor score of cmi,total score of sds and sas as independent variables.conclusion problems of psychosomatic health,anxiety and depression could both lead to sleep disorder.

目的 研究在校大学生心身健康因素及抑郁焦虑等与睡眠状况的相关性，并对影响睡眠状况的有关因素进行分析。方法采用问卷式的开放性研究，对在校的200名大学生进行康奈尔心身健康问卷、自评抑郁量表、焦虑自评量表和匹兹堡睡眠质量量表的测定，采用逐步回归分析方法。结果 sds总分为35.55±7.8、sas总分为0.48±0.9，cmi评分：消化系统最为严重评分为2.52，其次为呼吸系统、疲劳感、眼和耳、焦虑、敏感、紧张、不适应等，评分均高于正常常模。psqi总均分为6.32±3.6，一般睡眠有115例占57.5%，睡眠质量较好42例占21.0%，睡眠质量较差43例占21.5%。评估对睡眠状况的影响程度，以psqi总分为因变量，选择cmi各因子分和sds、sas总分作为自变量，进行多因素逐步回归分析，进入方程的因素依据标准化偏回归系数，影响psqi总分的因素依次为sas总分、cmi总分、呼吸系统、焦虑、既往健康、消化系统、疲劳感、敏感、sds总分、不适应（f=226.8；p.01；r=0.73）。结论心身健康问题和焦虑抑郁可导致睡眠障碍。

The fatigue test of CFRP bars was carried out at the different cyclic stress, choose the 70% ultimate tensile stress of CFRP bar as the maximum cyclic stress, under the cyclic ratios of R=0.5 （the minimum-to-maximum stress ratio） and R=0 and the fatigue behavior of CFRP bars was investigated.

进行了不同循环应力下CFRP筋的常温疲劳试验，选取CFRP筋70％的极限拉伸应力作为最大循环应力，在R=0.5（最小循环应力与最大循环应力的比）和R=0的应力率下，测量了CFRP筋的疲劳寿命曲线，研究了CFRP筋的疲劳性能。

The effect of undissolved ferrite amount on contact, impact and bending fatigue properties were studied. The stress relaxation and grain refinement due to occurring of plastic deformation are main reasons of improving the fatigue life.

就未溶铁素体含量对接触疲劳、多冲疲劳及弯曲疲劳性能的影响机理进行研究，局部的应力集中因铁素体发生塑变而得到松弛和细化晶粒是提高疲劳寿命的主要原因。

Microstructural analysis indicated that granular carbides existed in the steel of lower fatigue life prior to quenching heating, which remained undissolved during austenizing and remained in the quenching microstructure,resulting in lower fatigue life.

但调查发现，这些工作多数局限在弹簧钢常规力学性能方面，对抗疲劳性能的研究相对较少，而弹簧生产中则经常出现疲劳寿命达不到要求、影响因素却不清楚的问题。

Lastly, to test the efficacy of shim plate in the single hole plate and research the fatigue life of single hole plate by means of changing the thickness and size of shim plate and the various torque, and then to test the shim plate efficacy at the abutting joint part for studying the fatigue life of the screw connecting component and rivet connecting component of typical wainscot of X air plane.

最后，首先在单孔板上试验垫片的功效，通过改变垫片的尺寸厚度、垫片面积及垫片在承受不同大小力矩下，分析研究单孔板的疲劳寿命，确定垫片尺寸厚度、面积和力矩对单孔板寿命的影响。其次在对接件上试验垫片的功效，研究运X飞机典型壁板螺接结构件和铆接结构件的疲劳寿命。

The best ink in the off-time after opening the packaging end use, not to open the ink on the outside when not in use Add to carton packaging, the cartridge so as to avoid talking about the dust falling into the hands of the next use of the dust caused by plugging into the nozzle first, the head following a reset state of ink wash sponge pad, open the front cover, press the Print Paper knife, move out, the hair can not suction clean cloth towel or sponge the ink pad, a large amount of about 10 days, then wash first, because each sponge pad is printer ink wash drawing of fatigue, if the dust and fatigue more ink will be solidified with the protection of Garra and print images will be the first flush, if the plug was found, and if the use of cleaning 3 seconds is not normal use, we must enter the printer maintenance menu kk2 or use kk1 cleaning, large format printers and a small printer operation principle is similar, if the correct maintenance and use, it will increase the service life, which Like is like a car, but also for us to maintain and are familiar with it

墨水最好在拆开包装后断时间内使用完，不要把打开的墨水放在外面，不用时包装好放入纸盒内，以免墨盒嘴上落入灰尘，下次使用时灰尘进入喷头造成堵头情况，喷头复位状态下面有一个洗墨海绵垫，打开前盖，按下打印切纸刀，往外移，用不起毛的纸巾或布吸干净海绵垫的墨水，用量大的话大约在10天清洗一次，因为海绵垫是打印机每次冲洗时吸取疲墨水的，如果灰尘多就会和疲墨水凝固在一起，对墨头的保护和打印头冲洗会有影像，如果发现堵头情况，如果使用清洗3秒还不能正常使用，我们要进入打印机的维护菜单用kk2或kk1清洗，大幅面打印机和小打印机的操作原理是差不多的，如果正确的维护和使用，它的使用寿命就会增长，这也好比一辆轿车一样，还要我们去维护和熟悉它

Based on massive fatigue tests, dynamic curve of development of fatigue broken wire of wire rope is proposed.

本文在大量钢丝绳疲劳试验研究的基础上，提出了钢丝绳疲劳断丝数扩展动态曲线的概念。

The accoustic emission induced by multi-pulse laser thermal shock was acquisited and used to determine the damage fatigue threshold and fatigue threshold.

根据声发射信号确定了不同载荷作用下的激光热疲劳损伤阈值和热疲劳寿命；用超声的方法确定了PMMC的激光热-力疲劳损伤参数。

Bending fatigue test of small-specimen and ISO rolling test of full size of bamboo wood composite container floorings and apitong plywood floorings are carried through respectively, the test results show the fatigue-resistant properties of bamboo wood composite container floorings are better than those of apitong plywood floorings.

进行了竹木复合集装箱底板和阿必东胶合板底板的小试件的三点弯曲疲劳试验以及装箱后底板ISO小车滚压疲劳试验，结果显示出，竹木复合集装箱底板的抗疲劳性能更佳。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。