zone circle
2.We shall make a study and demonstration of common technology about sand protection and control in the capital circle and broaden the zone of technical demonstration, establish the technical system which can effectively contain the trend of the desert in the capital circle, forming a mode of massive popularization and make the control rate of the desert of Beijing city able to reach 100 percent by 2008.
3.With these two quarters, one of Hotels, the other of houses,the third feature of aspect presented by the city was a long zone of abbeys, which bordered it in nearly the whole of its circumference, from the rising to the setting sun, and, behind the circle of fortifications which hemmed in Paris, formed a second interior enclosure of convents and chapels.
4.Because electro-hydraulic servo system has lag circle、dead zone、nonlinear tache, and difficult to ascertain the precise mathematic model, fuzzy control test system was designed to overcome the system disadvantage, the design method of fuzzy cotroller and the implementation of computer fuzzy control software were all proposed.
