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A study on the method of estimating gasoline engine radiated noise by measuring surface vibration is carried out. Firstly, the theoretical basis and test method is studied. Then an experiment is carried out on a four-cylinder gasoline engine. By measuring the engine surface vibration velocity, the sound power level of these engine parts and of the engine body is calculated. The result shows that the estimation of engine radiated noise is accurate. It shows the sound power level of gasoline engine can be predicted by surface vibration.

It take 4010 samples which have intercity travel between Guangzhou and Foshan under the background of urban integration as studying object and acquire travel information from internet investigation. It cross analyze the intercity travel characteristics which contain travel purpose, mode, frequency and cost and the travelers social attributes which include the career, age and revenue through the methods of Social Statistics and GIS spatial analysis. It also studies the changing of Guang-Fo intercity travel and the distributing characteristics of travel origins.

In this paper, the CF/PSE-C composite is studied and tested: its characteristics of water absorption before and after the treatment of plasma are determined; the mechanical properties of the composite after water absorption are analyzed and its retention rate of mechanical strength after the absorption is compared. Results show that the water absorption of CF/PES-C composite which has been treated by plasma for 15 minutes is lower and the speed of absorption is slower while retention rate of mechanical strength after absorption is high. The CF/PFS-C resin matrix composite produced after plasma treatment is thicker and the interface pore between CF and PES-C resin matrix becomes smaller, which improves the composites moisture and heat resistance.

The roughness and stripe of the carbon fiber surface is increased, what is in favour of the combination of fiber and resin, and also increases the active ingredient of fiber surface, by using the low temperature plasma on carbon fiber surface treatment. In this paper, we research the influence of CF/PES-C material ILSS with low temperature plasma treatment. Experimental results show that the low temperature plasma treatment improves the interfacial adhesion performance of CF/PES-C composite material, so that it mends the interfacial property of the composites.

The site location has the crucial influence on the success of high-speed railway station area. Based on the site location type of high-speed railway station, this article analyzes the characteristics different types as a case of the Beijing-Shanghai high-speed rail stations. At last it puts forwards that the accessibility, demands for land and urban coordination are the main factors affecting the station location from both internal and external factors of the site location of high-speed railway station.