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Two above methods are generalized to tensor product Bézier surfaces and triangular Bézier surfaces, we give two approaches of degree reduction for tensor product Bézier surfaces, each of which reduces a given degree n×m tensor product Bézier surface to a n〓×m〓 one, and two methods of degree reduction for triangular Bézier surfaces, which reduce a given degree n triangular Bézier surface to a degree m one. The explicit formulas of control points for reduced tensor product and triangular Bézier surfaces are obtained respectively.

张量积Bézier曲面的两种降阶方法均可把n×m阶张量积Bézier曲面一次降阶为n〓×m〓阶张量积Bézier曲面；三角Bézier曲面的两种降阶方法均可把n阶三角Bézier曲面一次降阶为m阶三角Bézier曲面，并给出降阶张量积Bézier曲面和降阶三角Bézier曲面控制顶点的显示表示式。

Review tersely from monitoring methods, prediction and forecast methods and the characteristics of research.

滑坡预测预报是有效预防滑坡灾害的重要途径之一，这方面的研究不仅受到广泛重视，且硕果累累。

In this paper, the principle and hardware of test system are designed and the step motor's control software is designed at the same time. The assessing methods of linearity errors are analyzed and the test methods of linearity, diameter and roughness are provided and the corresponding softwares are programmed with VB. At last, the test method of roughness without touch-light scattering is proposed.

论文对检测系统的原理及硬件电路进行了设计，同时对步进电机的控制软件进行了详细的设计；对直线度误差的评定方法进行了分析，分别给出了炮膛内径的直线度、直径及阴阳膛表面粗糙度的测量方法，并用VB 编写了相应的控制软件，最后提出了一种炮膛粗糙度非接触测量法—光散射法。

Main research contents as follows:(1) The four destruction models and respective stability analysis methods are discribed in this paper, whose working mechnism and calculating methods are given. In addition, some defects of every method are also discussed ;(2) On the basis of traditional active soil pressure method and expirical siol pressure method , the calculating model of the laternal earth pressure which is a tetragon with the largest value in the center side is addressed.

主要工作如下：(1)本文给出了复合土钉墙的稳定性分析方法，该方法介绍了复合土钉墙的四种破坏类型，分析了每种破坏类型的受力机理，并给出了相应的计算方法和计算方法中的一些不足；(2)在传统的主动土压力和经验土压力的基础上，建立了土钉墙中间大、上下小的四边形状分布的侧向土压力的计算模式。

Firstly, the average equation under first,and second order of Van der pol-Mathieu-Duffing system are obtained through theatric methods. According to the stability criteria, the physical parameter plane is divided into different regions, associated with different types of steady state solutions, which are proved by employing numerical methods.

本文首先通过理论分析得到了Van der pol-Mathieu-Duffing方程在一、二阶近似下的定常解，分析了平均方程在不同参数平面内的幅值响应曲线，根据解的稳定性判据得到了物理参数平面上的分岔集以及定常运动在相应平面的分布情况，详细分析了该系统在各个区域内的动力学特性。

The article detailedly introduces the research situation of body balance testing system. So far, the evaluation of human body balance ability is limited to use balance scale and balance performance monitor. There is no combination of several methods or synthetic analysis for the balance ability, or some aided methods, such as gait, thenar force as well as the muscle strength of lower limb. A consummation, reasonable and scientific evaluation system has not been formed.

文章较详细地介绍了目前人体平衡测试系统的研究现状，得出到目前为止对人体平衡能力的评价仅局限于单一的利用平衡量表或平衡测试仪，还没有几种测试方法的结合或配备其他一些辅助方法来综合反应人体平衡能力，比如步态、足底压力以及下肢肌肉力量等测试等手段，还未形成一个完善、合理和科学评价人体平衡能力的评价体系。

Firstly, in this paper I analyze the motors starting capability and starting methods in common use, discuss the reason and imperiling of the high current impulsion when start directly, compare the advantage and disadvantage of starting methods in common use, and thereout arrive at several problems had to take into account when starting the motor.

文章首先分析了交流异步电动机的起动性能和常用起动方法，讨论了直接起动时大电流冲击产生的原因和危害，并对常用起动方法的优缺点进行了比较分析，进而得出了电机起动过程中应该考虑的几个问题。

The methods of infrared thermography and spectrogrum are presented, and the results obtained based on them and the methods themselves are been compared.

结果显示，两种方法所测结果相近，能比较客观地反映泡沫的红外遮蔽干扰能力。

Synthesis methods of thionyl chloride such as HSO 3Cl method, SO 2 method, SO 3 method, co production method and enterprises adopting above methods are evaluated.

近年来由于国内一些生产企业的产品在纯度等质量指标方面达不到某些下游产品生产要求等原因，我国每年都进口相当数量的氯化亚砜。

Methods The clinical characteristics,the methods of diagnosis and treatment of 42 cares with leg thrombophlebitis were retrospectively analyzed.

回顾性分析42例剖手术术后并发下肢血栓性静脉炎产妇的临床特点和诊断、治疗方法。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。