The least square method is applied to study the deformation tendency and calculate the mean annual rate of deformation.
用最小二乘法拟合了库区地壳形变多年的变化趋势，计算了多年平均形变速率。
The annual mean increase rate of sandy desertification is 0.37 percent from 1940s to 1990s, which forebodes a increasing trend of sandy desertification in Hexi corridor.
河西走廊荒漠化面积年平均增长率达0．37％，说明该区域荒漠化呈发展趋势。
The annual mean increase rate of sandy desertification is 0.37 percent from 1940s to 1990s, which forebodes a increasing trend of sandy desertification in Hexi corridor.
河西走廊荒漠化面积年平均增长率达0．37％，说明该区域荒漠化呈发展趋势。
应用推荐