Collapse is a flattening or severe distortion of the cells, when severe, collapse appears as local depressions or corrugations on the surface. 皱缩可使细胞压扁或严重变形,情况严重时,皱缩使木材表面呈现局部凹陷或起皱。
Analysis of contact stress between thief zone wellbore and bellow pipe The tubes are bolted to the wall with the flat steel, open side against the bin corrugations. 油气井井漏井壁与波纹管接触应力分析采用扁钢将该管固定在仓壁上,使开口的一边对着波纹仓壁。
Cardboard with corrugations ( can be glued to flat cardboard on one or both sides). 有皱褶的纸板(可用胶水将单面或双面变平)。
Walking control for biped robots on uneven ground cardboard with corrugations ( can be glued to flat cardboard on one or both sides). 不平整地面上双足机器人的步态控制有皱褶的纸板(可用胶水将单面或双面变平)。
In a first configuration ( e.g.open configuration), a first distribution of stored elastic stresses is counterbalanced against at least two reinforcing corrugations ( 12). 在第一构型(例如,展开构型)中,储存弹性应力的第一分布与至少两个增强皱折(12)保持平衡。
These rubbers need repairing; they're letting in water. cardboard with corrugations ( can be glued to flat cardboard on one or both sides). 这双胶鞋需要修补一下,里面进水了。有皱褶的纸板(可用胶水将单面或双面变平)。
The cost of land leveling is offset by the low labor requirement for turning water into a few border rather than into many furrows or corrugations. 把水放入几块畦田比放人许多灌水沟或垄沟花费的劳力要少,这就补偿了平整土地的费用。
Enhancement of channel plasmon polaritons propagating in the silver groove surrounded by periodic surface corrugations 银膜表面周期性条纹导致的沟槽等离激元增强效应
Small furrows known as corrugations are used for uncultivated grain and forage crops. 称为灌水垄沟的小沟用于不中耕的粮食作物和饲料作物。
The structural analysis becomes very complicated for the large number of corrugations consist in the metal roof. 但由于屋面板中存在有大量波纹状褶皱,这使得结构分析变得异常复杂。
The results demonstrate that the large corrugations may be caused by the surface deformation resulting from the interaction between the tip and the sample. 实验结果表明:由于针尖一样品之间的相互作用而造成的样品表面弹性形变是使观察到的石墨单色器表面图像呈现较大起伏的主要原因。
The experimental and primary theoretical research on the formation of rail corrugations, based on the friction self-excited vibration of wheelsets has been Carried out on fhe four axis freight vehicle. 本文根据轮对摩擦自激振动是钢轨波状磨损形成的基本机理的观点,结合四轴货车进行了实验研究和初步理论分析。
Torsional Vibration of Wheelsets and Curved Rail Corrugations 轮轴扭转振动与曲线地段钢轨波形磨耗
The results of computation coincide with the test data in the case of slight corrugations. 波深较小时计算结果与实测数据吻合。
In this paper, the modified iteration method is successfully extended to investigate the nonlinear free vibration of corrugated circular plates with full corrugations. 在本文中,我们将修正迭代法成功地推广运用于全波纹圆板的非线性振动问题的研究,获得了全波纹圆板的非线性振频和振幅的解析关系式。
In this paper, four methods of the fractal dimension measurements for rail corrugations are given. The fractal characteristics and description of rail corrugation are discussed. The relationship between the fractal dimension and the degree of rail corrugations is established. 介绍了分维的量测方法,讨论了钢轨波磨的分形特征与分形描述,建立了分维与波磨程度之间的关系,讨论了钢轨波磨分形的工程意义。
This article, giving an approach to the Problem of Surface corrugations of rails in our national railway to day, holds that contact resonance of Wheel-rail system is the reason for the generation of surface corrugations. 本文对当前我国铁路钢轨的波纹磨损问题作了探讨,认为论轨系统的接触共振是形成波纹磨损的原因,并对有关影响因素作了分析。
The corrugations on the rails under the 4 wheels of the same bogie when a car passes through the lateral dent are calculated. 计算了客车车辆通过钢轨轨头横向凹坑时,同一个转向架的4个车轮反复作用下钢轨初始波磨形成和发展情况。
Fractal Description of Rail Corrugations 钢轨波磨的分形描述
The analysis of forced and chatter vibrations are made according to the observation and analysis of the microroughness of probe workpiece surface, high frequency corrugations on chip surface as well as the vibration measured at cutting point of milling machine. 通过观察分析工件表面的微观不平度、切削表面的高频波纹和在机床切削点测得的振动信号,跟踪分析了铣削强迫振动和颤振现象。
The parameters of the corrugations in the corrugated bumper plates are optimized in a manner that minimizes the potential for the creation of ricochet debris in the event of an oblique hypervelocity impact. 针对在倾斜超高速碰撞事件中跳飞碎片的产生,波纹薄护罩的波纹参数可以用减少势的方法优化。
Primary Experimental and Theoretical Research on the Rail Corrugations 钢轨波状磨损形成机理的初步试验和理论研究
The STM images show both the larger corrugations and terraces existing on the surface, which would not be observed by SEM. STM图像显示出石墨单色器表面存存着台阶和大的波纹起伏,而用扫描电子显微镜却不能观察到这样的结果。
Because of fractal theory can be applied to describe the nature of the irregularity and non-integrable geometry of the system self-similarity, it can also be used to analyze the fractal nature of rail corrugations. 由于分形理论可用于描述自然界的一些不规则性以及不可积系统的几何图形的自相似性,因此可用来对钢轨的波磨进行分形和多分形性分析。