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。

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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。

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The chances are that the latest round of economic and political instability in India will mean that the country will be hard pushed to sustain its annual growth rate above six percent.

BBC: South Asia: Rupee down

More jobs mean more income and more consumer spending: in October wages rose at an annual rate of 7%.

ECONOMIST: Corporate profits in America