英语语法分析

The soil hydrology-physical properties of the soils adret and ubac of the forest was studied, through two-year observation(2003~2004) and comparision in the artificial forest of Cinnamomum camphora(L.

对樟树人工林林地不同坡向阳坡和阴坡的土壤水文-物理性质进行为期两年的观测和对比分析。