Areal rainfall is average rainfall of the unit area within a certain region and be able to reflect the situation of rainfall in the region objectively.
面雨量是指某区域范围内单位面积的平均降雨量，能够比较客观地反映该区域内的降雨情况。
2
Furthermore, the size of areal features is measured by its covered area.
面实体的大小通过其覆盖面积来度量。
3
The areal heterogeneity directly influences the swept area and sweep efficiency of the injected water, and thus controls the areal distribution of the remaining oil.