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The mechanism of instability wrinkling in the process based on minimum energy principle is revealed, uniform mathematic description of the wrinkling wave on the strip of in-plane bending is established, the internal and external energy is deduced by energy method, and a uniform criteria of internal and external wrinkling is established; then how to combine the criteria with the FEM simulation system to make the numerical prediction of wrinkling into reality is also resolved in the paper. The effects of the forming parameters on the deforming result are analyzed by the uniform predict criteria. The results show as follows: as the compress width increase, external wrinkling first come into being, then internal winkling do, and finally in-plane bend occur; the loading wedge angle increase, internal winkling first come into being, thenin-plane bend do, and finally external wrinkling occur; in-plane bend is possible to occur with a increase of the strain-hardening exponent and the strength coefficient; and the effect of the friction factor may be ignored.

2揭示了板带不均匀压下面内弯曲成形过程基于能量原理的失稳起皱机理，提出了统一的描述内外缘起皱波形的函数，采用变分法推导了服从该波形函数的内外缘起皱能，建立了统一的起皱预测准则；将新建立的统一的起皱预测准则引入到数值模拟系统IBS中，数值预测结果与实验结果的吻合较好；分析了成形过程各参数对起皱的影响规律：随着接触变形区宽度的逐渐增大，先是发生外缘起皱，然后发生内缘起皱，进而才出现稳定成形；随着实际加载楔角的增大，先是发生内缘起皱，然后发生稳定成形，进而出现外缘起皱；硬化指数和强化系数增大，易于稳定成形；摩擦因子对起皱的影响不明显；而且接触变形区宽度对起皱的影响最大。

In this paper, based on a linear mathematic model a new method in measuring phased array antenna quickly is described.

本文研究了一种对相控阵天线特性进行快速测量的新方法。

The general mathematic model for analyzing the hydrogenerator with the internal armature winding faults is established by using the multi loop theory in this paper.

应用多回路理论建立水轮发电机定子绕组内部故障分析的通用数学模型，引入回路关联矩阵减少回路方程总数并自动形成各种故障形式的回路参数，对水轮发电机定子绕组内部故障的稳态性能进行仿真计算，探讨了水轮发电机定子绕组内部故障（如匝间短路、支路间短路等）规律。

ICA is receiving increasing attention in EEG signal processing for its mathematic model is similar with each other.

因为脑电问题比较接近独立分量分析的模型，它在脑电信号处理中的应用潜力正逐步受到关注。

Finally, the index of non-probabilistic reliability is introduced in mathematic model of optimization design, and optimizations of axle shaft structure of machine tool and hollow conveying shaft based on non-probabilistic reliability model are presented. The engineering examples show that the presented methods are convenient and effective.

最后，将机械的非概率可靠性指标引入到优化设计的数学模型中，分别对空心传动轴和机床主轴结构进行了可靠性优化设计，通过工程实例说明了该方法是简便和有效的。

According to the results of the analysis and the experiment,the mathematic model of the ball mill load-controlapparatus was established and its sample was successfully designed.

根据多次试验和分析结果，建立了球磨机负荷控制系统的数学模型，也完成了其样机的设计。

Based on the analyses of the flow and sediment characteristics and evolution trend of the river bed of the Fuling reach in the Yangtze River before and after the impoundment of the Three Gorges Reservoir, the water level, velocity variation and influenced range in the Fuling reach before and fifty years after the operation of the Three Gorges Reservoir with the construction of the Fuling dock and four discharge combinations are calculated by using a two-dimensional flow mathematic model.

摘要在分析长江涪陵段的水沙特性和三峡水库蓄水前后该河段河床演变趋势的基础上，运用二维水流数学模型，分析了4种流量组合情况下在三峡水库运用前和运用50年，涪陵港区码头修建前后的水位、流速变化及其影响范围。

An 1-D sediment mathematic model is developed in the second part. Techniques are suggested for some problems in calculations, such as the effective suspended load carrying capacity of the different bed material reach, the coefficient of suspended load carrying capacity, the recovering coefficient of the carrying capacity, the thickness of the mixed layer, the transport width of the bedload, bifurcation and confluence of main and branch channel, and the distribution of deposition and erosion along the cross section, etc. The numerical scheme of 1-D model is induced.

第二部分建立了一维泥沙数学模型，对计算中的几个关键问题提出了处理方法，如不同床沙组成河段的有效挟沙力、挟沙力系数、挟沙力的恢复饱和系数、床面混合层厚度、推移质输移带宽度、干支流入汇及分流问题、横断面冲淤形态及断面修正方法，导出了一维模型的差分格式。

Thirdly, mathematic model of flowing fluid will be established in both radial gap and axial gap, and the pressure distribution laws will also be concluded in these two gaps.Fourthly, pressure distribution drawing will be made in entrance and cover board of pumps and axial gap of balance device.

为了分析新型轴向力平衡装置间隙的内部流动，建立了径向间隙和轴向间隙内部的流动数学模型，并应用粘性不可压缩流体的纳维—斯托克斯方程和流体的连续性方程，推导出了两间隙进出口压力差和泄漏量的关系式，进而得出平衡装置间隙内部的压力分布规律。

This text has designed the hardware and software of the electric control system of computer test board. And choose the control units and design the parameter for it. Especially research the driving motor by frequency converter and mathematic model of the operated brake lever force.

本文对测试系统电气控制系统的硬件和软件进行了设计，并对控制元器件以及控制参数进行设计，特别对电机变频控制以及施加的握闸力进行参数设计控制。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。