查询词典 pantograph

This paper lists some important factors of influencing safe operation of bow net system,introduces pantograph and anti-scrape bow protection device which is installed on service locomotive,and discusses a new technology of improving pantagraph current quality——self-adaptive bow head system.

列举了影响弓网系统安全运行的几项重要因素；介绍在运营机车上试验安装的受电弓防刮弓保护装置，以及因该装置所产生的提高受流质量的新技术——自适应弓头系统；提出了两个系统整合的创新点。

This article elaborates the full-scale test at present electric railway bow net system, designs a new control system to fall the Pantograph fall and introduces a home unusual, controlled Pantograph fall in the busy host skeleton line. This research provides reference for the furthur study of bow net protection system by artificially creating the real appearance of bow net relations.

从实际试验出发，阐述了在目前电气化铁路弓网系统中，对弓网保护装置所起作用的一种验证方法，同时构思和设计了一种新型的受电弓滑板掉块控制系统，并介绍了一次国内少有的、在繁忙主干线上控制受电弓滑板掉块造成人为弓网关系再现的真实过程，为进一步开展弓网保护系统研究提供参考。

This view of Bill's shop shows his Bridgeport knee mill and Deckel G1-L 2-D engraving pantograph.

这一观点的条例草案的商店表明，他的布里奇波特膝关节轧机和戴克尔的G1 -升二三维雕刻受电弓。

On the basis of establishing the differential equations of motion of the pantograph and catenary system, the TSG3 pantograph has been simulated.

在建立弓网系统运动微分方程的基础上，本文对TSG3受电弓几个主要参数进行了模拟计算。

Cu-C composite is one of the most potential materials for pantograph slide plate, which is an important component of pantograph system in locomotive. The principle of wettability between Cu and C was investigated in this paper. The element of Mo was selected to improve the wettability between Cu and C. The fabrication process of cold compression sintering fiber reinforced Cu-C composite and its effect on the composite property were studied. The wear and friction mechanism of Cu-C composite was investigated initially by electriferous friction test.

Cu-C材料是目前最具应用前景的电力机车受电弓滑板用材料之一，本文研究了Cu与C之间的润湿原理，利用Mo元素有效改善了Cu与C之间的润湿性；并对冷压烧结法制备纤维增强Cu-C复合材料的工艺过程及其对性能的影响进行了研究；通过带电摩擦试验对Cu-C复合材料带电摩擦磨损机理进行了初步探讨。

The ElectroPneumatic Walking Robot of Figure6 was designed since 1995, with a pantograph as the basic leg mechanism, but double parallelograms have been added so that a foot can keep a horizontal posture to facilitate con-tact with the terrain and operation of the suction cups.

Theelectropneumatic步行机器人figure6设计自1995年以来，pantograph的基本腿机制，但双平行增加了，使脚能保持横向的姿态，以便协商技巧的地形和经营的吸管杯。

In order to improve the catenary-pantograph dynamic characteristics,i.e.let the pantograph follow the catenary to reduce pantograph stray and arcing,the pantograph-catenary contact force should be stable and change within a certain range.

为改善弓网动态特性，使受电弓对于接触网具有良好的跟随性，减少离线和拉弧，必须减少弓网间接触力的波动，使之在一定的范围内变化。

How to ensure sufficient mechanical strength and stiffness but small equivalent quality to improve the dynamic behavior of the pantograph catenary system is a serious problem of the pantograph design.

在满足强度与刚度的前提下，最大限度减小受电弓归算质量，以改善弓－网动态性能是受电弓设计的关键问题。

On the base of foreign EMUs pantograph it summarized the measures how to reduce aerodynamic noise generated by EMUs pantograph.

目前，随着列车速度的提高，特别是动车组的投入运营，机械噪声退居次要地位，而气动噪声逐渐占

Finally, based on the studies above, the characteristics of pantograph/catenary are analyzed and the active pantograph is modeled. By using the linear quadratic optimal control law, the design objective is to minimize the performance index, which is a function of the state variables representing the pantographs dynamic characteristic and the active control force. The control system is designed considering the complete state feedback.

最后，在此基础上，分析了受电弓／接触网系统的工作特点，建立了受电弓主动控制系统的数学模型，利用线性二次型最优控制策略，以给定性能指标为最小值为设计目标，性能指标为表征受电弓动力学特性的状态变量和主动控制力的函数，考虑了完全状态反馈的情况，进行了控制系统的设计。

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。