转向值

The paper implements a study about some factors having influences on the bending behavior of externally prestressed concrete simple supported bridges .these factors include the change of PPR、 the change of match tendon rate、 the change of static friction coefficient and the sliding one, the reasonably scope of these parameters value is given.

4以整体施工的体外预应力简支梁为研究对象，利用自编程序就预应力度、截面配筋及转向块与体外筋的相对滑动等参数对体外预应力梁受弯性能的影响进行了分析研究，给出了这些参数的合理取值范围。

If a magnetic flux density is larger than threshold Bop, DO is turned to sink and DOB is turned to drive.

如果磁通密度大于阈值波普，DO是转向下沉和出生日期是转向驱动器。

It's main feature is that we can obtain many types of edges simultaneously by detecting the maximum value of local energy.After that,we get the initial edge.

对于边缘的检测，近年来，人们的研究兴趣更多的转向了局部能量的方法，这是一种基于局部相位的方法，它的特点是通过局部能量的最大值可以同时得到不同类型的边缘。

Based on analysis and comparison of the principle, method and form of train mass calculation and the correlative" select-judge value" for raising speed train,a change of particular attention from train mass to train speed is recommended in this paper,and the second critical gradient between the recommendatory maximum speed method and the traditional calculative speed method is established to the "select-judge value".

本文在分析与比较提速列车质量计算的原则和方式方法以及相关的选择判别值的基础上，提出应从传统的侧重列车质量的方式转向侧重运行速度的方式，并最终确立第二临界坡度为推荐的最高速度法与传统的计算速度法的选择判别值。

In the first section,the existence of solution for a class of non-linear systems with three -point boundary problem is obtained by applying the differential inequality theory .

在第一部分中，我们应用微分不等式理论证明了一类非线性系统三点边值问题解的存在性；在第二部分中，运用微分不等式理论研究了一类带有转向点的拟线性奇摄动边值问题的非单调内层解；在第三部分中，利用对角化方法研究了一类向量二点或者三点边值问题解的存在性，并获得解及它的一、二阶导数的渐近估计。

Second, based on the principles of vehicle "Tripped" rollover caused by Understeer/Oversteer and "Untripped" rollover caused by large lateral acceleration, select yaw rate, vehicle slip angle, roll angle and roll rate as the control variables, and determine when vehicle is not stable and how to avoid vehicle rollover properly. Third, the research of vehicle stability control is based on vehicle dynamics model.

针对汽车由于不足转向或转向过度引起&绊倒&型侧翻，以及由于侧向加速度过大引起的操纵型侧翻进行原理分析，确定选取横摆角速度、质心侧偏角以及侧倾角和侧倾角变化作为控制变量，探讨相应的汽车稳定行驶阀值，根据侧翻原理确定正确的控制策略。

The method of calculating the bearing capacity of Normal Section in external unbonded prestressed beams is also suggested, which can be used to calculate the strength of concrete beams with straight unbonded tendons prestressing tendons and draped prestressing tendons with one or two support deviators.

计算结果表明，公式计算值与实测值接近，所建立的公式对直线预应力筋、具有一个转向块、两个转向块的折线形预应力等布筋方式的梁的承载力计算结果是能满足工程需要的。

The effects of frequency veering features on mode localization of the mistuned system were analyzed with L. It is shown that the distance between the frequency veering curves at nodal diameters is a key parameter, and it exists a minimum value for the parameter, around which blade modes are very sensitive to mistuning, and can result in dramatic fluctuation of the mode localization degree.

研究表明，频率转向曲线之间关于节径的最小间隙是反映频率转向特征的重要参数，并存在一个转向频率间隙的极小值点，在该极值点附近，频率转向区内的模态对叶片失谐非常敏感，并会导致模态局部化程度剧烈变化。

Firstly, this paper discusses the development actuality of the research on double-front axle steering system and power-train of automobile. Based on the structure of the design experiences from others, the kinematics formula of double-front axle steering system is fetched, and the mathematical model of optimization design of double rocking arms mechanism and steering trapezium mechanism is established by space geometry method. Considering the difference between the real steering angle from wheels and the ideal steering angle from the ideal formula as the objective function, the optimization design method of double-front axle steering system is presented.

本文首先论述了国内外对汽车双前桥转向系统和动力传动系统研究的发展状况，在总结前人研究设计经验的基础上推导出汽车双前桥转向系统运动学关系，运用空间几何法建立了双前桥双摇臂机构及转向梯形机构优化的数学模型，以转向轮实际转角值与理想公式求出的理想转角值之间的误差达到最小为目标函数，提出了双前桥转向系统参数的优化设计方法。

By adopting the center arm six-bar steering mechanism and using the analytical method to synthesize the four-bar mech...

采用中心臂六杆转向机构，由解析法综合出符合要求的四杆机构，再将其绕中间位置镜像，并确定适当调整各杆的位置，使其在给定输入转角范围内，输出转角值尽可能接近阿克曼原理计算的输出值，使车辆获得良好的转向性能。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。