查询词典 fatigue

The test equipment, installation and test principle of gigacycle friction fatigue were introduced in this paper,On the basis of the fatigue test apparatus of 20 KHz ultrasonic vibration,the frequency value,the dimension calculation formulas and the specific shape of the specimen were given.

介绍了高周摩擦疲劳试验设备、装置及试验原理根据 2 0 0 0 0Hz超声波震动疲劳试验机的要求，给出了试件的频率值、尺寸计算、公式和具体形状；最后，给出了摩擦力、应力与位移的表达形式和疲劳寿命的记录方

Fatigue cracks develop in the shape of semi-ellipse, and the pattern of fatigue crack growth looks like headstand Y with the head pointing at the origin of the cracks.

疲劳裂纹源和裂纹扩展区部分的图像呈放射状的人字形条纹，人字纹指向裂源，其反向为裂纹的扩展方向。

The effect of heating temperature for recovering fatigue damage on accumulated fatigue life of 45 carbon steel has been investigated.

通过试验研究了恢复加热温度对45钢疲劳损伤后累积疲劳寿命的影响。

Among them, the antioxidant compounds can effectively remove free radicals and esters peroxygen compounds inside the body, and interdict the powerful cancerogenic substance N-ammonium nilrite compounds. It can not only greatly enhance the body's immunity, but also with effective functions in moisturizing the skin, anti-fatigue and anti-aging; the bamboo fiber contains the amino acid necessary for human body, having distinctive health-care functions on the skin; the bamboo cellulose, bamboo honey and pectin have the effects of moisturizing the skin and fighting fatigue. They can increase the body's microcirculating blood, activate the histiocyte, enable the body to produce heating effects, effectively regulate the nervous system and unclog the meridian; the bamboo fiber has no free electric charge, antistatic and relieves itching.

其中，抗氧-化合物能有效清除体内的自由基和酯-过氧化合物，阻断强致癌物质N一亚-酸氨化合物，不仅能显著提高机体免-能力，而且具有滋润皮肤和抗疲劳、-抗衰老的生物功效；竹纤维含有多种-体必需的氨基酸，对皮肤具有独特的-健功能；竹纤维素、竹密、果胶具有-滋润皮肤和抗疲劳的功效，能增加人-的微循环血流，激活组织细胞，使人-产生温热效应，能有效调节神经系统-，疏通经络；竹纤维不带自由电荷，-静电，止瘙痒。

Results:①The doses of 0.8 g·kg-1, 1.2 g·kg-1, 1.6g·kg-1 and 2.0g·kg-1 of AMJ could delay the time of fatigue in nerve centre, neuromuscular junction and muscle of mice, but in hoptoad, only the doses of 0.8 g·kg-1 and 1.2g·kg-1 have the same effect,the dose of 1.6g·kg-1 and larger doses could accelerate the fatigue.

结果：① 0.8g·kg-1、1.2g·kg-1、1.6g·kg-1和2.0g·kg-1剂量的黄芪注射液均能延缓小鼠中枢、神经-肌接头和肌的疲劳，蟾蜍仅有0.8 g·kg-1和1.2 g·kg-1有此作用，1.6g·kg-1及以上剂量的黄芪注射液对蟾蜍有加速上述部位疲劳的作用。

The impactive tenacity is a sort of energy. Therefore, it was used to forecast fatigue life is much scientific than using bottom tensile strain. This test method is simple too. It offered a clew that forecasts fatigue life.

沥青混合料的冲击韧性是一个能量的概念，在原理上比应用拉应变预测疲劳寿命更科学，试验方法简单，为混合料疲劳寿命的预测提供了一个思路。

The results of the tests indicate that the spots where the fatigue short cracks initiated are at the bottom surface of the circle indention and some disfigurement places in that surface. The propagation paths of the cracks are very complex and the decentralization of the obtained data is very severe due to the micro organism of the material. While the distribution of the short fatigue cracks exist self-regularity on their length, angle, density and expansion rate of the cracks, which are less affected by the outer factors.

试验中观察到短裂纹形状多为Z型，试验结果表明疲劳短裂纹往往萌生于试样缺口底部表面和缺口表面缺陷处，其扩展复杂，路径曲折，数据分散性大，强烈地受材料微观组织的影响，疲劳短裂纹在长度、角度、密度和扩展速率方面虽数据分散但具有自身的规律，受外部因素的影响较小。

The influence of indentor radius on the plastic deformation has been discussed and some important results are as follows:(1) The influence of the ratio of ceramic coating thickness to indentor radius on the failure of coating, plastic deformation of substrate and crack propagation are obvious.(2)The propagation of crack in ceramic coating is assumes to be of semi-elliptical shape under normal contact with a rigid sphere.(3)Fatigue life of ceramic coating is mainly decided by substrate and load, the lower substrate elastic moduli and load, the more cycles of fatigue.

分析了压头半径对塑性变形的影响，模拟结果表明；(1)陶瓷涂层厚度和压头半径之比对涂层失效、基体塑性变形及裂纹的形成有显著影响；(2)在刚性球压头静态挤压条件下，陶瓷涂层中的预制裂纹按照椭圆形裂纹规律扩展；(3)陶瓷涂层的疲劳寿命与基体和载荷有很大关系，基体弹性模量越小，疲劳寿命延长。

In the indoor ideal conditions, the relevant comparative tests of different grid interlayer of asphalt mixture and overlay structure have been done by using interlay shearing device, drawing machine, Marshall multi-functional strength device and rutting machine, and then the test results have been evaluated by a rational approach. Meanwhile, the simulated test of the overlay fatigue life has been done by using ordinary rutting machine, and the different overlay thickness of different grade interlayer and different sawing depth of overlay structure have been studied by the fatigue test.

5在室内理想条件下，采用层间剪切仪、层间拉拔仪、马歇尔多功能强度试验机及车辙轮碾仪进行了不同层位格栅的沥青混合料及与加铺层结构相关的对比试验，并采用合理的方法对试验结果进行了评价；同时，采用普通车辙仪进行加铺层结构疲劳模拟对比试验，系统地对不同加铺层厚度的不同格栅设置层位及不同旧路锯缝深度的加铺层结构进行了研究。

Boca had to undergo a streak of games in a two-week span and Ischia referred to the consequent fatigue: If you play 4 games on sequential Sundays and Thursdays fatigue becomes inevitable.

博卡必须接受2周的长度和密度而引起的疲劳：如果你周日和周四连打四场比赛，疲劳不可避免。

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。