莫小小爱吃肉
High-speed railway is running speed 200km h of the railway, it's convenient, comfortable and efficiency more and more people. in 1964 by october, japan's tokyo to osaka tokaido shinkansen high-speed rail to 210 kilometers hours, the french to build a high-speed railway in 1981 the (tgv) high-speed railway line, southeast of exuberant vitality.According to statistics, the chinese put into operation of the railway has reached the 6800 many kilometers in the world. china has become a high-speed railway system and technology, integrated the ability to the stage, the long run, the speed, which are the largest country.This major study for the cp to control the shape of net , test methods and to meet the demand for the cp to control the location accuracy and cp control locations in a relative error and may repeat the errors of precision measurement indicators and clear under which the cp the error, and eventually to meet without 砟 track to requests for measurement construction protected.
神之雪1314
High-speed railway is the speed 200km / h over the railway, it fast, comfortable, efficient and more and more popular. October 1964, Japan Tokaido Shinkansen high-speed railway between Tokyo and Osaka to 210 km / h run, the French built in 1981, the first high-speed railway (TGV Southeast Line), high-speed railway show vitality. According to statistics, China's high-speed railway in operation has reached more than 6800 km. China has become the world's most complete high-speed rail system technology, integrated the strongest, longest operating mileage, maximum speed, the largest country in the building. This paper studies the construction requirements to meet the net-shaped CP control network layout, sampling methods, research to meet the construction requirements for positioning accuracy and control network CP CP Control Network relative error and precision control and repeatable indicators of measurement error, which clearly CP Control Network error, and ultimately to meet the construction Ballastless measurement of smoothness required protection.
优质英语培训问答知识库
