The paper analyzed the existing problems of common wires used as underground transmisson line of power supply and signal of monitoring and alarming , and put forward a new type of transmission wire based on plastic 摘要文章分析了井下供电电源和监控告警信号传输线路常用导线存在的问题，提出了一种基于塑料的新型传输线。
This paper introduces the design of propulsion & power supply system for shanghai maglev transrapid project , including the choice of power supply , the load caculation , the layout of 110kv & propulsion substation as well as the wayside equipment 摘要简要叙述了世界首条进行商业运营的磁浮列车线上海磁浮快速列车示?运营线的牵引供配电系统的设计，包括供电电源的确定、负荷的组成，变电所的布置和轨旁设备的组成等。
The author analyzed test signals and steps of each display test standard , and drew the meaningful contents for fed tests . finally , test technologies and evaluation methods were creatively established . the test standards and evaluation methods were verified by lab - made 25 inch fed panel 根据所提出的fed整机和显示屏参数的测试方法,建立fed整机参数和fed显示屏像元的光电特性的测试系统,包括测试仪器设备、信号源和供电电源,实际测试了本实验室制作25英寸彩色fed显示器。
In order to meet demands for faster and more efficient data processing in these applications , it will require aggressive power management . that is to say , it will require special power supply to provide lower voltages with higher currents and fast transient capabilities , whilst high power density , high efficiency , and high reliability is also desired 为了满足这些场合对更快、更有效的数据处理的要求，其供电电源的要求也在不断提高，具体表现在：更低输出电压、更高输出电流、高功率密度、高效率、快动态响应及高可靠性。
The dc distributor shelf play a important role in transformer substation , power plant , big and middle plants etc . it supply mainly to the controled , protected and communicate equipment , automechanism , manipulaor and adjusted machine . the same time it may as accident lighting power supply , so its performance and reliability affect directly the running safely of whole power supplying system 直流电源屏作为供电电源在变电站、发电厂、大中型厂矿企业等供电系统中占有很重要的地位，主要用于向控制、保护、通信设备、自动装置操作机械和调节机械的传动机构供电，同时还可以作为独立的事故照明电源，所以其性能及可靠性直接影响到整个供电系统的正常安全运行。
Flat panel display ( fpd ) test technology is a hot subject among display field . this paper puts forward fed parameters and test methods , parameters , steps and signals for photoelectric characteristic of panel units . also , test systems including test instruments , signal sources and supply power for fed parameters and photoelectric characteristic of panel units 本文提出了场致发射显示器( fed )整机参数和fed显示屏像元的光电特性的测试方法、测试参量、测试步骤和测试信号,建立了场致发射显示器( fed )整机参数和fed显示屏像元的光电特性的测试系统,包括测试仪器设备、信号源和供电电源。
