午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线

By use of average wind speed and direction data from 1957 to 2007 and the 10minute 24h wind speed measurements from the surface automatic meteorological station of Alashankou from 1 February 2007 to 31 December 2008, it is concluded with the statistical method that the number of hours of effective wind energy is 4575, and the effective wind energy density is 166 W/m2. The effective wind energy is much greater in Spring, Summer and Autumn than that in Winter in this area. Alashankou is a wind energy rich, but seasonally available area, has big potentials in the utilization of energy resources. The Alashankou port is an important hub and platform for the western China, which has an increasing energy need. The utilization of wind energy in this area has great significance for environment protection and economic development.