The image of the Huajian-Ci Collection shows striking consistency and repetition rate,this article chose the scenes of back to the window,back to the light and so on with high frequency which can expand the thought of the reader to explore the poet\'s cultural character of complicated feelings,the aesthetic taste,the mentality of liegeman and concubine,and the rich cultural implication.

Simulation of back-to-back HVDC system with PSCAD / EMTDC;

Application of HVDC Damping Control in Linbao Back-to-Back Project;

Research on Pole Control System of Back-to-Back HVDC Projects;

HVDC System Design of BTB Project Between Northwest China and Central China;

Study of Two Sets of Control System for LingBao BTB HVDC Project;

To decrease direct serial number and switching frequency of electronic devices,and simplify the main circuit topology,a module-cascade based BTB HVDC-flexible system is proposed.

In this paper, the real time digital simulator (RTDS for short) is applied in control and protection system simulation study for Lingbao Converter Station, Northwest to Central China Back to Back HVDC Link.

Being the first back to back project for network link in China, the Northwest to Central China back to back project plays and important role in DC transmission construction, operation and localization of manufacturing of HVDC equipment.

This paper carries on the analysis of the sample of 2008～2009NBA competition schedule,selecting factor namely back to back(in NBA,continual two away game combat called back to back) quantity.

It introduces the principle of hardware choice and summarizes the design and realization of the test system,and then it dwells on the definitions expressions arithmetic and importance of throughput frame-loss-rate latency and back-to-back the four performan.